CSS documentation index

Found 1008 pages:

# Page Tags and summary
1 CSS: Cascading Style Sheets CSS, Cascading Style Sheets, Design, Landing, Layout, Reference, Style Sheets, Styles, Stylesheets, l10n:priority
Cascading Style Sheets (CSS) is a stylesheet language used to describe the presentation of a document written in HTML
2 -moz-binding CSS, CSS Property, CSS:Mozilla Extensions, Deprecated, Mozilla, Non-standard, Reference, XBL, XUL
The -moz-binding CSS property is used by Mozilla-based applications to attach an XBL binding to a DOM element.
3 -moz-border-bottom-colors CSS, CSS Property, CSS:Mozilla Extensions, Non-standard, Obsolete, Reference
In Mozilla applications like Firefox, the -moz-border-bottom-colors CSS property sets a list of colors for the bottom border.
4 -moz-border-left-colors CSS, CSS Property, Non-standard, Obsolete, Reference
In Mozilla applications like Firefox, the -moz-border-left-colors CSS property sets a list of colors for the left border.
5 -moz-border-right-colors CSS, CSS Property, CSS:Mozilla Extensions, Non-standard, Obsolete, Reference
In Mozilla applications like Firefox, the -moz-border-right-colors CSS property sets a list of colors for the right border.
6 -moz-border-top-colors CSS, CSS Property, CSS:Mozilla Extensions, Non-standard, Obsolete, Reference
In Mozilla applications like Firefox, the -moz-border-top-colors CSS property sets a list of colors for the top border.
7 -moz-box-ordinal-group CSS, CSS:Mozilla Extensions, Flexible Box, Non-standard, Reference
Indicates the ordinal group the element belongs to. Elements with a lower ordinal group are displayed before those with a higher ordinal group.
8 -moz-cell CSS, CSS Value, Deprecated, Reference
Don't use this value! Use the cursor value cell instead.
9 -moz-context-properties -moz-context-properties, CSS, CSS Property, CSS:Mozilla Extensions, Experimental, Needs Privileges, Non-standard, Reference
If you reference an SVG image in a webpage (such as with the <img> element or as a background image), the SVG image can coordinate with the embedding element (its context) to have the image adopt property values set on the embedding element. To do this the embedding element needs to list the properties that are to be made available to the image by listing them as values of the -moz-context-properties property, and the image needs to opt in to using those properties by using values such as the context-fill value.
10 -moz-float-edge CSS, CSS Property, CSS:Mozilla Extensions, Layout, NeedsCompatTable, Non-standard
The non-standard -moz-float-edge CSS property specifies whether the height and width properties of the element include the margin, border, or padding thickness.
11 -moz-force-broken-image-icon CSS, NeedsCompatTable, Non-standard, Reference
The -moz-force-broken-image-icon extended CSS property can be used to force the broken image icon to be shown even when a broken image has an alt attribute.
12 -moz-image-rect CSS, CSS Function, CSS Images, CSS:Mozilla Extensions, Non-standard, Reference
The -moz-image-rect value for CSS background-image lets you use a portion of a larger image as a background. This allows you to, for example, use different parts of one larger image as backgrounds in different parts of your content.
13 -moz-image-region CSS, CSS Property, CSS:Mozilla Extensions, Non-standard, Reference
For certain XUL elements and pseudo-elements that use an image from the list-style-image property, this property specifies a region of the image that is used in place of the whole image. This allows elements to use different pieces of the same image to improve performance.
14 -moz-orient CSS, CSS Property, Non-standard, Reference
The -moz-orient CSS property specifies the orientation of the element to which it's applied.
15 -moz-outline-radius CSS, CSS Property, CSS:Mozilla Extensions, Non-standard, Reference
In Mozilla applications like Firefox, the -moz-outline-radius CSS property can be used to give an element's outline rounded corners.
16 -moz-outline-radius-bottomleft CSS, CSS Property, NeedsCompatTable, NeedsContent, Non-standard, Reference
In Mozilla applications, the -moz-outline-radius-bottomleft CSS property can be used to round the bottom-left corner of an element's outline.
17 -moz-outline-radius-bottomright CSS, CSS Property, NeedsCompatTable, NeedsContent, Non-standard, Reference
In Mozilla applications, the -moz-outline-radius-bottomright CSS property can be used to round the bottom-right corner of an element's outline.
18 -moz-outline-radius-topleft CSS, CSS Property, NeedsCompatTable, NeedsContent, Non-standard, Reference
In Mozilla applications, the -moz-outline-radius-topleft CSS property can be used to round the top-left corner of an element's outline.
19 -moz-outline-radius-topright CSS, CSS Property, NeedsCompatTable, NeedsContent, Non-standard, Reference
In Mozilla applications, the -moz-outline-radius-topright CSS property can be used to round the top-right corner of an element's outline.
20 -moz-stack-sizing CSS, CSS Property, NeedsCompatTable, Non-standard, Reference, XUL
-moz-stack-sizing is an extended CSS property. Normally, a <xul:stack> will change its size so that all of its child elements are completely visible. For example, moving a child of the stack far to the right will widen the stack so the child remains visible.
21 -moz-text-blink CSS, CSS Property, CSS:Mozilla Extensions, Non-standard, Obsolete, Reference
The -moz-text-blink non-standard Mozilla CSS extension specifies the blink mode.
22 -moz-user-focus -moz-user-focus, CSS, CSS:Mozilla Extensions, NeedsContent, Non-standard, Reference
The -moz-user-focus CSS property is used to indicate whether an element can have the focus.
23 -moz-user-input CSS, CSS Property, CSS:Mozilla Extensions, Deprecated, Non-standard, Reference
In Mozilla applications, -moz-user-input determines if an element will accept user input.
24 -moz-window-shadow CSS, CSS Property, NeedsCompatTable, Non-standard, Obsolete, Reference, XUL
The -moz-window-shadow CSS property specifies whether a window will have a shadow. It only works on Mac OS X.
25 -ms-accelerator CSS, CSS Property, Non-standard, Reference
The -ms-accelerator CSS property is a Microsoft extension that sets or retrieves a string indicating whether the object represents a keyboard shortcut.
26 -ms-block-progression CSS, CSS Property, Non-standard, Reference
The -ms-block-progression CSS property is a Microsoft extension that specifies the block progression and layout orientation.
27 -ms-content-zoom-chaining CSS, CSS Property, Non-standard, Reference
The -ms-content-zoom-chaining CSS property is a Microsoft extension specifying the zoom behavior that occurs when a user hits the zoom limit during page manipulation.
28 -ms-content-zoom-limit CSS, CSS Property, Non-standard, Reference
The -ms-content-zoom-limit CSS shorthand property is a Microsoft extension that specifies values for the -ms-content-zoom-limit-min and -ms-content-zoom-limit-max properties.
29 -ms-content-zoom-limit-max CSS, CSS Property, Non-standard, Reference
The -ms-content-zoom-limit-max CSS property is a Microsoft extension that specifies the selected elements' maximum zoom factor.
30 -ms-content-zoom-limit-min CSS, CSS Property, Non-standard, Reference
The -ms-content-zoom-limit-min CSS property is a Microsoft extension that specifies the minimum zoom factor.
31 -ms-content-zoom-snap CSS, CSS Property, Non-standard, Reference
The -ms-content-zoom-snap CSS shorthand property is a Microsoft extension that specifies values for the -ms-content-zoom-snap-type and -ms-content-zoom-snap-points properties.
32 -ms-content-zoom-snap-points CSS, CSS Property, Non-standard, Reference
The -ms-content-zoom-snap-points CSS property is a Microsoft extension that specifies where zoom snap-points are located.
33 -ms-content-zoom-snap-type CSS, CSS Property, Non-standard, Reference
The -ms-content-zoom-snap-type CSS property is a Microsoft extension that specifies how zooming is affected by defined snap-points.
34 -ms-content-zooming CSS, CSS Property, Non-standard, Reference
The -ms-content-zooming CSS property is a Microsoft extension that specifies whether zooming is enabled.
35 -ms-filter CSS, CSS Property, CSS:Microsoft Extensions, Non-standard, Obsolete, Reference
The -ms-filter CSS property is a Microsoft extension that sets or retrieves the filter or collection of filters applied to an object.
36 -ms-flow-from CSS, CSS Property, Non-standard, Reference
The -ms-flow-from CSS property is a Microsoft extension that gets or sets a value identifying a region container in the document that accepts the content flow from the data source.
37 -ms-flow-into CSS, CSS Property, Non-standard, Reference
The -ms-flow-into CSS property is a Microsoft extension that gets or sets a value identifying an iframe container in the document that serves as the region's data source.
38 -ms-high-contrast-adjust CSS, CSS Property, Non-standard, Reference
The -ms-high-contrast-adjust CSS property is a Microsoft extension that gets or sets a value indicating whether to override any CSS properties that would have been set in high contrast mode.
39 -ms-hyphenate-limit-chars CSS, CSS Property, Non-standard, Reference
The -ms-hyphenate-limit-chars CSS property is a Microsoft extension that specifies one to three values indicating the minimum number of characters in a hyphenated word. If the word does not meet the required minimum number of characters in the word, before the hyphen, or after the hyphen, then the word is not hyphenated.
40 -ms-hyphenate-limit-lines CSS, CSS Property, Non-standard, Reference
The -ms-hyphenate-limit-lines CSS property is a Microsoft extension specifying the maximum number of consecutive lines in an element that may be ended with a hyphenated word.
41 -ms-hyphenate-limit-zone CSS, CSS Property, Non-standard, Reference
The -ms-hyphenate-limit-zone CSS property is a Microsoft extension specifying the width of the hyphenation zone.
42 -ms-ime-align CSS, CSS Property, NeedsBrowserCompatibility, Non-standard, Reference
The -ms-ime-align CSS property is a Microsoft extension aligning the Input Method Editor (IME) candidate window box relative to the element on which the IME composition is active. The extension is implemented in Microsoft Edge and Internet Explorer 11.
43 -ms-overflow-style CSS, CSS Property, NeedsBrowserCompatibility, NeedsCompatTable, NeedsExample, NeedsMobileBrowserCompatibility, Non-standard, Reference
The -ms-overflow-style CSS property is a Microsoft extension controlling the behavior of scrollbars when the content of an element overflows.
44 -ms-scroll-chaining CSS, CSS Property, Non-standard, Reference
The -ms-scroll-chaining CSS property is a Microsoft extension that specifies the scrolling behavior that occurs when a user hits the scroll limit during a manipulation.
45 -ms-scroll-limit CSS, CSS Property, Non-standard, Reference
The -ms-scroll-limit CSS property is a Microsoft extension that specifies values for the -ms-scroll-limit-x-min, -ms-scroll-limit-y-min, -ms-scroll-limit-x-max, and -ms-scroll-limit-y-max properties.
46 -ms-scroll-limit-x-max CSS, CSS Property, Non-standard, Reference
The -ms-scroll-limit-x-max CSS property is a Microsoft extension that specifies the maximum value for the Element.scrollLeft property.
47 -ms-scroll-limit-x-min CSS, CSS Property, Non-standard, Reference
The -ms-scroll-limit-x-min CSS property is a Microsoft extension that specifies the minimum value for the Element.scrollLeft property.
48 -ms-scroll-limit-y-max CSS, CSS Property, Non-standard, Reference
The -ms-scroll-limit-y-max CSS property is a Microsoft extension that specifies the maximum value for the Element.scrollTop property.
49 -ms-scroll-limit-y-min CSS, CSS Property, Non-standard, Reference
The -ms-scroll-limit-y-min CSS property is a Microsoft extension that specifies the minimum value for the Element.scrollTop property.
50 -ms-scroll-rails CSS, CSS Property, Non-standard, Reference
The -ms-scroll-rails CSS property is a Microsoft extension that specifies whether scrolling locks to the primary axis of motion.
51 -ms-scroll-snap-points-x CSS, CSS Property, Non-standard, Reference
The -ms-scroll-snap-points-x CSS property is a Microsoft extension that specifies where snap-points will be located along the x-axis.
52 -ms-scroll-snap-points-y CSS, CSS Property, CSS Scroll Snap, CSS:Microsoft Extensions, Non-standard, Reference
The -ms-scroll-snap-points-y CSS property is a Microsoft extension that specifies where snap-points will be located along the y-axis.
53 -ms-scroll-snap-x CSS, CSS Property, CSS Scroll Snap, CSS:Microsoft Extensions, Non-standard, Reference
The -ms-scroll-snap-x CSS shorthand property is a Microsoft extension that specifies values for the -ms-scroll-snap-type and -ms-scroll-snap-points-x properties.
54 -ms-scroll-snap-y CSS, CSS Property, CSS Scroll Snap, CSS:Microsoft Extensions, Non-standard, Reference
The -ms-scroll-snap-x CSS shorthand property is a Microsoft extension that specifies values for the -ms-scroll-snap-type and -ms-scroll-snap-points-y properties.
55 -ms-scroll-translation CSS, CSS Property, CSS Scroll Snap, CSS:Microsoft Extensions, Non-standard, Reference
The -ms-scroll-translation CSS property is a Microsoft extension that specifies whether vertical-to-horizontal scroll wheel translation occurs on the specified element.
56 -ms-scrollbar-3dlight-color CSS, CSS Property, CSS:Microsoft extentions, Deprecated, Non-standard, Reference
The -ms-scrollbar-3dlight-color CSS property is a Microsoft extension specifying the color of the top and left edges of the scroll box and scroll arrows of a scroll bar.
57 -ms-scrollbar-arrow-color CSS, CSS Property, CSS:Microsoft extentions, Deprecated, Non-standard, Reference
The -ms-scrollbar-arrow-color CSS property is a Microsoft extension that specifies the color of the arrow elements of a scroll arrow.
58 -ms-scrollbar-base-color CSS, CSS Property, CSS:Microsoft extentions, Deprecated, Non-standard, Reference
The -ms-scrollbar-base-color CSS property is a Microsoft extension that specifies the base color of the main elements of a scroll bar.
59 -ms-scrollbar-darkshadow-color CSS, CSS Property, CSS:Microsoft extentions, Deprecated, Non-standard, Reference
The -ms-scrollbar-darkshadow-color CSS property is a Microsoft extension that specifies the color of a scroll bar's gutter.
60 -ms-scrollbar-face-color CSS, CSS Property, CSS:Microsoft extentions, Deprecated, Non-standard, Reference
The -ms-scrollbar-face-color CSS property is a Microsoft extension that specifies the color of the scroll box and scroll arrows of a scroll bar.
61 -ms-scrollbar-highlight-color CSS, CSS Property, CSS:Microsoft extentions, Deprecated, Non-standard, Reference
The -ms-scrollbar-highlight-color CSS property is a Microsoft extension that specifies the color of the slider tray, the top and left edges of the scroll box, and the scroll arrows of a scroll bar.
62 -ms-scrollbar-shadow-color CSS, CSS Property, CSS:Microsoft extentions, Deprecated, Non-standard, Reference
The -ms-scrollbar-shadow-color CSS property is a Microsoft extension that specifies the color of the bottom and right edges of the scroll box and scroll arrows of a scroll bar.
63 -ms-scrollbar-track-color CSS, CSS Property, CSS:Microsoft extentions, Deprecated, Non-standard, Reference
The -ms-scrollbar-track-color CSS property is a Microsoft extension that specifies the color of the track element of a scrollbar.
64 -ms-text-autospace CSS, CSS Property, CSS:Microsoft Extensions, Non-standard, Reference
The -ms-text-autospace CSS property is a Microsoft extension that specifies the autospacing and narrow space width adjustment of text.
65 -ms-touch-select CSS, CSS Property, CSS:Microsoft Extensions, Non-standard, Reference
The -ms-touch-select CSS property is a Microsoft extension that toggles the gripper visual elements that enable touch text selection.
66 -ms-wrap-flow CSS, CSS Property, CSS:Microsoft Extensions, Non-standard, Reference
The -ms-wrap-flow CSS property is a Microsoft extension that specifies how exclusions impact inline content within block-level elements.
67 -ms-wrap-margin CSS, CSS Property, CSS:Microsoft Extensions, Non-standard, Reference
The -ms-wrap-margin CSS property is a Microsoft extension that specifies a margin that offsets the inner wrap shape from other shapes.
68 -ms-wrap-through CSS, CSS Property, CSS:Microsoft Extensions, Non-standard, Reference
The -ms-wrap-through CSS property is a Microsoft extension that specifies how content should wrap around an exclusion element.
69 -webkit-border-before -webkit-border-before, CSS, CSS Property, CSS:WebKit Extensions, Non-standard, Reference
The -webkit-border-before CSS property is a shorthand property for setting the individual logical block start border property values in a single place in the style sheet.
70 -webkit-box-reflect -webkit-box-reflect, CSS, CSS Property, CSS:WebKit Extensions, Non-standard, Reference
The -webkit-box-reflect CSS property lets you reflect the content of an element in one specific direction.
71 -webkit-line-clamp -webkit-line-clamp, CSS, CSS Property
The -webkit-line-clamp CSS property allows limiting of the contents of a block container to the specified number of lines.
72 -webkit-mask-attachment CSS, CSS Property, Layout, Non-standard, Reference, Web
If a -webkit-mask-image is specified, -webkit-mask-attachment determines whether the mask image's position is fixed within the viewport, or scrolls along with its containing block.
73 -webkit-mask-box-image CSS, Layout, Non-standard, Reference, Web
-webkit-mask-box-image sets the mask image for an element's border box.
74 -webkit-mask-composite -webkit-mask-composite, CSS, CSS Masking, CSS Property, CSS:WebKit Extensions, Non-standard, Reference, mask-composite
The -webkit-mask-composite property specifies the manner in which multiple mask images applied to the same element are composited with one another.
75 -webkit-mask-position-x CSS, CSS Masking, CSS Property, Non-standard, Reference
The -webkit-mask-position-x CSS property sets the initial horizontal position of a mask image.
76 -webkit-mask-position-y CSS, CSS Masking, CSS Property, Non-standard, Reference
The -webkit-mask-position-y CSS property sets the initial vertical position of a mask image.
77 -webkit-mask-repeat-x CSS, CSS Masking, CSS Property, Non-standard, Reference
The -webkit-mask-repeat-x property specifies whether and how a mask image is repeated (tiled) horizontally.
78 -webkit-mask-repeat-y CSS, CSS Masking, CSS Property, Non-standard, Reference
The -webkit-mask-repeat-y property sets whether and how a mask image is repeated (tiled) vertically.
79 -webkit-overflow-scrolling CSS, CSS Property, Non-standard, Reference
The -webkit-overflow-scrolling CSS property controls whether or not touch devices use momentum-based scrolling for a given element.
80 -webkit-print-color-adjust CSS, CSS Property, Layout, Non-standard, Web
The -webkit-print-color-adjust property is a non-standard CSS extension that can be used to force printing of background colors and images in browsers based on the WebKit engine.
81 -webkit-tap-highlight-color CSS, CSS Property, NeedsCompatTable, NeedsExample, NeedsMobileBrowserCompatibility, Non-standard, Reference
-webkit-tap-highlight-color is a non-standard CSS property that sets the color of the highlight that appears over a link while it's being tapped. The highlighting indicates to the user that their tap is being successfully recognized, and indicates which element they're tapping on.
82 -webkit-text-fill-color CSS, CSS Property, Non-standard, Reference
The -webkit-text-fill-color CSS property specifies the fill color of characters of text. If this property is not set, the value of the color property is used.
83 -webkit-text-security CSS, CSS Property, NeedsCompatTable, Non-standard, Reference
-webkit-text-security is a non-standard CSS property that obfuscates characters in a <form> field (such as <input> or <textarea>) by replacing them with a shape. It only affects fields that are not of type=password.
84 -webkit-text-stroke CSS, CSS Property, Non-standard, Reference, WebKit
The -webkit-text-stroke CSS property specifies the width and color of strokes for text characters. This is a shorthand property for the longhand properties -webkit-text-stroke-width and -webkit-text-stroke-color.
85 -webkit-text-stroke-color CSS, CSS Property, Non-standard, Reference, WebKit
The -webkit-text-stroke-color CSS property specifies the stroke color of characters of text. If this property is not set, the value of the color property is used.
86 -webkit-text-stroke-width CSS, CSS Property, Non-standard, Reference, WebKit
The -webkit-text-stroke-width CSS property specifies the width of the stroke for text.
87 -webkit-touch-callout CSS, CSS Property, Layout, NeedsLiveSample, Non-standard, Reference, WebKit
The -webkit-touch-callout CSS property controls the display of the default callout shown when you touch and hold a touch target.
88 :-moz-broken CSS, CSS:Mozilla Extensions, NeedsCompatTable, Non-standard, Pseudo-class, Reference
The :-moz-broken CSS pseudo-class is a Mozilla extension that matches elements representing broken image links.
89 :-moz-drag-over CSS, CSS:Mozilla Extensions, NeedsCompatTable, Non-standard, Pseudo-class, Reference
The :-moz-drag-over CSS pseudo-class is a Mozilla extension that matches an element when a dragover event is called on it.
90 :-moz-first-node CSS, CSS:Mozilla Extensions, NeedsCompatTable, Non-standard, Pseudo-class, Reference
The :-moz-first-node CSS pseudo-class is a Mozilla extension that represents any element that is the first child node of some other element. It differs from :first-child because it does not match a first-child element with (non-whitespace) text before it.
91 :-moz-focusring CSS, CSS:Mozilla Extensions, Non-standard, Pseudo-class, Reference
The :-moz-focusring CSS pseudo-class is a Mozilla extension that is similar to the :focus pseudo-class, but it only matches an element if it's currently focused and a focus ring or other indicator should be drawn around it.
92 :-moz-full-screen-ancestor CSS, CSS:Mozilla Extensions, Deprecated, Non-standard, Pseudo-class, Reference
The :-moz-full-screen-ancestor CSS pseudo-class is a Mozilla extension that represents all ancestors of the full-screen element, except containing frames in parent documents, which are the full-screen element in their own documents. However, those elements' ancestors have this pseudo-class applied to them.
93 :-moz-handler-blocked CSS, CSS:Mozilla Extensions, Non-standard, Pseudo-class, Reference
The :-moz-handler-blocked CSS pseudo-class is a Mozilla extension that matches elements that can't be displayed because their handlers have been blocked.
94 :-moz-handler-crashed CSS, CSS:Mozilla Extensions, Non-standard, Pseudo-class, Reference
The :-moz-handler-crashed CSS pseudo-class is a Mozilla extension that matches elements that can't be displayed because the plugin responsible for drawing them has crashed.
95 :-moz-handler-disabled CSS, CSS:Mozilla Extensions, Non-standard, Pseudo-class, Reference
The :-moz-handler-disabled CSS pseudo-class is a Mozilla extension that matches elements that can't be displayed because their handlers have been disabled by the user.
96 :-moz-last-node CSS, CSS:Mozilla Extensions, NeedsCompatTable, Non-standard, Pseudo-class
The :-moz-last-node CSS pseudo-class is a Mozilla extension that represents any element that is the last child node of some other element. It differs from :last-child because it does not match a last-child element with (non-whitespace) text after it.
97 :-moz-loading CSS, CSS:Mozilla Extensions, NeedsCompatTable, Non-standard, Pseudo-class, Reference
The :-moz-loading CSS pseudo-class is a Mozilla extension that matches elements that can't be displayed because they have not started loading, such as images that haven't started to arrive yet. Note that images that are in the process of loading are not matched by this pseudo-class.
98 :-moz-locale-dir(ltr) CSS, CSS:Mozilla Extensions, Localization, NeedsCompatTable, Non-standard, Pseudo-class, Reference
The :-moz-locale-dir(ltr) CSS pseudo-class is a Mozilla extension that matches an element if the user interface is being displayed left-to-right. This is determined by the preference intl.uidirection.locale (where locale is the current locale) being set to "ltr".
99 :-moz-locale-dir(rtl) :-moz-locale-dir, CSS, CSS:Mozilla Extensions, Localization, NeedsCompatTable, NeedsExample, Non-standard, Pseudo-class, Reference, Right-to-left
The :-moz-locale-dir(rtl) CSS pseudo-class is a Mozilla extension that matches an element if the user interface is being displayed right-to-left. This is determined by the preference intl.uidirection.locale (where locale is the current locale) being set to "rtl".
100 :-moz-only-whitespace :-moz-only-whitespace, CSS, Non-standard, Pseudo-class, Reference, Selectors
The :-moz-only-whitespace CSS pseudo-class matches elements that only contains text nodes that only contain whitespace. (This includes elements with empty text nodes and elements with no child nodes.)
101 :-moz-submit-invalid :-moz-submit-invalid, CSS, CSS:Mozilla Extensions, Non-standard, Pseudo-class, Reference
The :-moz-submit-invalid CSS pseudo-class is a Mozilla extension that represents any submit <button> on forms whose contents aren't valid based on their validation constraints.
102 :-moz-suppressed CSS, CSS:Mozilla Extensions, NeedsCompatTable, Non-standard, Pseudo-class, Reference
The :-moz-suppressed CSS pseudo-class is a Mozilla extension that matches elements representing images that were suppressed because loading images from the specified site has been blocked.
103 :-moz-system-metric() :-moz-system-metric, CSS, CSS:Mozilla Extensions, Non-standard, Obsolete, Pseudo-class
This page was auto-generated because a user created a sub-page to this page.
104 :-moz-system-metric(images-in-menus) CSS, NeedsContent, NeedsExample, Non-standard, Reference
The :-moz-system-metric(images-in-menus) CSS pseudo-class matches an element if the computer's user interface supports images in menus.
105 :-moz-system-metric(mac-graphite-theme) :-moz-system-metric, CSS, CSS:Mozilla Extensions, Non-standard, Reference
:-moz-system-metric(mac-graphite-theme) will match an element if the user has chosen the "Graphite" appearance in the "Appearance" prefpane of the Mac OS X System Preferences.
106 :-moz-system-metric(scrollbar-end-backward) CSS, NeedsContent, NeedsExample, Non-standard, Pseudo-class, Reference
The :-moz-system-metric(scrollbar-end-backward) CSS pseudo-class will match an element if the computer's user interface includes a backward arrow button at the end of scrollbars.
107 :-moz-system-metric(scrollbar-end-forward) CSS, NeedsContent, NeedsExample, Non-standard, Pseudo-class, Reference
The :-moz-system-metric(scrollbar-end-forward) CSS pseudo-class will match an element if the computer's user interface includes a forward arrow button at the end of scrollbars.
108 :-moz-system-metric(scrollbar-start-backward) CSS, NeedsContent, NeedsExample, Non-standard, Pseudo-class, Reference
The :-moz-system-metric(scrollbar-start-backward) CSS pseudo-class will match an element if the computer's user interface includes a backward arrow button at the start of scrollbars.
109 :-moz-system-metric(scrollbar-start-forward) CSS, NeedsContent, NeedsExample, Non-standard, Pseudo-class, Reference
The :-moz-system-metric(scrollbar-start-forward) CSS pseudo-class will match an element if the computer's user interface includes a forward arrow button at the start of scrollbars.
110 :-moz-system-metric(scrollbar-thumb-proportional) CSS, NeedsContent, NeedsExample, Non-standard, Pseudo-class, Reference
The :-moz-system-metric(scrollbar-thumb-proportional) CSS pseudo-class will match an element if the computer's user interface uses proportional scrollbar thumbs; that is, the draggable thumb on the scrollbar resizes to indicate the relative size of the visible area of the document.
111 :-moz-system-metric(touch-enabled) CSS, NeedsContent, NeedsExample, Non-standard, Pseudo-class, Reference
The :-moz-system-metric(touch-enabled) CSS pseudo-class will match an element if the device on which the content is being rendered offers a supported touch-screen interface.
112 :-moz-system-metric(windows-default-theme) CSS, Mozilla, Non-standard, Pseudo-class, Reference
The :-moz-system-metric(windows-default-theme) CSS pseudo-class matches an element if the user is currently using one of the following themes in Windows: Luna, Royale, Zune, or Aero (i.e., Vista Basic, Vista Standard, or Aero Glass). This will exclude Windows Classic themes as well as third-party themes.
113 :-moz-ui-invalid CSS, CSS Selectors, CSS:Mozilla Extensions, NeedsExample, NeedsMobileBrowserCompatibility, Non-standard, Pseudo-class, Reference
The :-moz-ui-invalid CSS pseudo-class represents any validated form element whose value isn't valid based on their validation constraints, in certain circumstances. This pseudo-class is applied according to the following rules:
114 :-moz-ui-valid CSS, CSS Selectors, CSS:Mozilla Extensions, NeedsExample, NeedsMobileBrowserCompatibility, Non-standard, Pseudo-class, Reference
The :-moz-ui-valid CSS pseudo-class represents any validated form element whose value validates correctly based on its validation constraints.
115 :-moz-user-disabled CSS, CSS:Mozilla Extensions, NeedsCompatTable, Non-standard, Pseudo-class, Reference
The :-moz-user-disabled CSS pseudo-class is a Mozilla extension that matches elements representing images that were not loaded because images have been entirely disabled by the user's preferences.
116 :-moz-window-inactive CSS, CSS:Mozilla Extensions, Non-standard, Pseudo-class, Reference
The :-moz-window-inactive CSS pseudo-class is a Mozilla extension that matches any element while it's in an inactive window.
117 :-webkit-autofill CSS, NeedsExample, Non-standard, Pseudo-class, Reference
The :-webkit-autofill CSS pseudo-class matches when an <input> element has its value autofilled by the browser.
118 ::-moz-color-swatch CSS, CSS:Mozilla Extensions, Non-standard, Pseudo-element, Reference
The ::-moz-color-swatch CSS pseudo-element is a Mozilla extension that represents the color selected in an <input> of type="color".
119 ::-moz-focus-inner CSS, CSS:Mozilla Extensions, Non-standard, Pseudo-element, Reference
The ::-moz-focus-inner CSS pseudo-element is a Mozilla extension that represents an inner focus ring of the <button> element as well as the button, submit, reset, and color types of the  <input> element.
120 ::-moz-list-bullet CSS, CSS:Mozilla Extensions, NeedsCompatTable, Non-standard, Pseudo-element, Reference
The ::-moz-list-bullet CSS pseudo-element is a Mozilla extension that represents the marker (typically a bullet) of a list item (<li>) in an unordered list (<ul>).
121 ::-moz-list-number CSS, CSS:Mozilla Extensions, NeedsCompatTable, Non-standard, Pseudo-element, Reference
The ::-moz-list-number CSS pseudo-element is a Mozilla extension that represents the marker (typically a number) of a list item (<li>) in an ordered list (<ol>).
122 ::-moz-page CSS, CSS:Mozilla Extensions, NeedsContent, NeedsExample, Non-standard, Pseudo-element, Reference
The ::-moz-page CSS pseudo-element is a Mozilla extension that represents an individual page when printed or in a print preview.
123 ::-moz-page-sequence CSS, CSS:Mozilla Extensions, NeedsExample, Non-standard, Pseudo-element, Reference
The ::-moz-page-sequence CSS pseudo-element is a Mozilla extension that represents the background of a print preview.
124 ::-moz-progress-bar CSS, CSS:Mozilla Extensions, NeedsCompatTable, Non-standard, Pseudo-element, Reference
The ::-moz-progress-bar CSS pseudo-element is a Mozilla extension that represents the progress bar inside a <progress> element. (The bar represents the amount of progress that has been made.)
125 ::-moz-range-progress CSS, CSS:Mozilla Extensions, Non-standard, Pseudo-element, Reference
The ::-moz-range-progress CSS pseudo-element is a Mozilla extension that represents the lower portion of the track (i.e., groove) in which the indicator slides in an <input> of type="range". This portion corresponds to values lower than the value currently selected by the thumb (i.e., virtual knob).
126 ::-moz-range-thumb CSS, CSS:Mozilla Extensions, Non-standard, Pseudo-element, Reference
The ::-moz-range-thumb CSS pseudo-element is a Mozilla extension that represents the thumb (i.e., virtual knob) of an <input> of type="range". The user can move the thumb along the input's track to alter its numerical value.
127 ::-moz-range-track CSS, CSS:Mozilla Extensions, Non-standard, Pseudo-element, Reference
The ::-moz-range-track CSS pseudo-element is a Mozilla extension that represents the track (i.e., groove) in which the indicator slides in an <input> of type="range".
128 ::-moz-scrolled-page-sequence CSS, CSS:Mozilla Extensions, NeedsContent, NeedsExample, Non-standard, Pseudo-element, Reference
The ::-moz-scrolled-page-sequence CSS pseudo-element is a Mozilla extension that represents the background of a print preview.
129 ::-ms-browse CSS, Non-standard, Pseudo-element, Reference
The ::-ms-browse CSS pseudo-element is a Microsoft extension that represents the button that opens the file picker of <input type="file">.
130 ::-ms-check CSS, CSS:Microsoft Extensions, Non-standard, Pseudo-element, Reference
The ::-ms-check CSS pseudo-element is a Microsoft extension that represents  checkboxes and radio button groups created by <input type="checkbox"> and <input type="radio">.
131 ::-ms-clear CSS, CSS:Microsoft Extensions, Non-standard, Pseudo-element, Reference
The ::-ms-clear CSS pseudo-element creates a clear button at the edge of an <input type="text"> text control that clears the current value. This pseudo-element is non-standard, supported only in Internet Explorer 10, Internet Explorer 11, and Microsoft Edge.
132 ::-ms-expand CSS, CSS:Microsoft Extensions, NeedsCompatTable, Non-standard, Pseudo-element, Reference
The ::-ms-expand CSS pseudo-element is a Microsoft extension that represents the button of a <select> menu control that opens or closes the drop-down menu. Typically it is a triangle that points downward.
133 ::-ms-fill CSS, Non-standard, Pseudo-element, Reference
The ::-ms-fill CSS pseudo-element is a Microsoft extension that represents a progress bar displayed by <progress>.
134 ::-ms-fill-lower CSS, NeedsBrowserCompatibility, NeedsExample, NeedsMobileBrowserCompatibility, Non-standard, Pseudo-element, Reference
The ::-ms-fill-lower CSS pseudo-element represents the lower portion of the track of a slider control; that is, the portion corresponding to values less than the value currently selected by the thumb. A slider control is one possible representation of <input type="range">.
135 ::-ms-fill-upper CSS, NeedsBrowserCompatibility, NeedsExample, NeedsMobileBrowserCompatibility, Non-standard, Pseudo-element, Reference
The ::-ms-fill-upper CSS pseudo-element is a Microsoft extension that represents the upper portion of the track of a slider control; that is, the portion corresponding to values greater than the value currently selected by the thumb. A slider control is one possible representation of <input type="range">.
136 ::-ms-reveal CSS, NeedsContent, NeedsExample, Non-standard, Pseudo-element, Reference
The ::-ms-reveal CSS pseudo-element is a Microsoft extension that is used to display a password reveal button for use with a password field created by <input type="password">. The user presses the button to reveal the actual field value rather than asterisks.
137 ::-ms-thumb CSS, NeedsBrowserCompatibility, NeedsCompatTable, NeedsExample, NeedsMobileBrowserCompatibility, Non-standard, Pseudo-element, Reference
The ::-ms-thumb CSS pseudo-element is a Microsoft extension that represents the thumb that the user moves within the track of a slider control to alter its numerical value. A slider control is one possible representation of <input type="range">.
138 ::-ms-ticks-after CSS, Non-standard, Pseudo-element, Reference
The ::-ms-ticks-after CSS pseudo-element is a Microsoft extension that applies one or more styles to the tick marks that appear after the track of a slider control. A slider control is one possible representation of <input type="range">.
139 ::-ms-ticks-before CSS, Non-standard, Pseudo-element, Reference
The ::-ms-ticks-before CSS pseudo-element is a Microsoft extension that applies one or more styles to the tick marks that appear before the track of a slider control. A slider control is one possible representation of <input type="range">.
140 ::-ms-tooltip CSS, Non-standard, Pseudo-element, Reference
The ::-ms-tooltip CSS pseudo-element is a Microsoft extension that represents the tooltip of a slider control. A slider control is one possible representation of <input type="range">.
141 ::-ms-track CSS, NeedsBrowserCompatibility, NeedsCompatTable, NeedsExample, NeedsMobileBrowserCompatibility, Non-standard, Pseudo-element, Reference
The ::-ms-track CSS pseudo-element is a Microsoft extension that represents the track of a slider control. A slider control is one possible representation of <input type="range">.
142 ::-ms-value CSS, Non-standard, Pseudo-element, Reference
The ::-ms-value CSS pseudo-element is a Microsoft extension that applies rules to the value of a text or password <input> control or the content of a <select> control.
143 ::-webkit-file-upload-button CSS, Non-standard, Pseudo-element, Reference
The ::-webkit-file-upload-button CSS pseudo-element represents the button of an <input> of  type="file".
144 ::-webkit-inner-spin-button CSS, NeedsBrowserCompatibility, NeedsMobileBrowserCompatibility, Non-standard, Pseudo-element, Reference
The ::-webkit-inner-spin-button CSS pseudo-element is used to style the inner part of the spinner button of number picker input elements.
145 ::-webkit-meter-bar -webkit-meter-bar, CSS, Non-standard, Pseudo-element, Reference, WebKit
The ::-webkit-meter-bar CSS pseudo-class is a WebKit extension that represents the meter bar in a <meter> element.
146 ::-webkit-meter-even-less-good-value -webkit-meter-even-less-good-value, CSS, Non-standard, Pseudo-element, Reference
The ::-webkit-meter-even-less-good-value gives a red color to a <meter> element when the value and the optimum attributes fall outside the low-high range, but in opposite zones. To illustrate, it applies when value < low < high < optimum or value > high > low > optimum.
147 ::-webkit-meter-inner-element -webkit-meter-inner-element, CSS, Non-standard, Pseudo-element, Reference
::-webkit-meter-inner-element is a proprietary WebKit CSS pseudo-element for selecting and applying styles to to the outer containing element of a <meter> element. Additional markup to render the meter element as read-only.
148 ::-webkit-meter-optimum-value ::-webkit-meter-optimum-value, CSS, Non-standard, Pseudo-element, Reference
The ::-webkit-meter-optimum-value CSS pseudo-element styles the <meter> element when its value is inside the low-high range.
149 ::-webkit-meter-suboptimum-value -webkit-meter-suboptimum-value, CSS, Non-standard, Pseudo-element, Reference
The ::-webkit-meter-suboptimum-value pseudo-element gives a yellow color to the <meter> element when the value attribute falls outside of the low-high range.
150 ::-webkit-outer-spin-button CSS, Non-standard, Pseudo-element, Reference
The ::-webkit-outer-spin-button CSS pseudo-element is used to style the outer part of the spinner button of number picker <input> elements.
151 ::-webkit-progress-bar CSS, Non-standard, Pseudo-element, Reference
The ::-webkit-progress-bar CSS pseudo-element represents the entire bar of a <progress> element. Normally it's only visible as the unfilled portion of the bar, since by default it's rendered below the ::-webkit-progress-value pseudo-element. It is a child of the ::-webkit-progress-inner-element pseudo-element and the parent of the ::-webkit-progress-value pseudo-element.
152 ::-webkit-progress-inner-element CSS, Non-standard, Pseudo-element, Reference
The ::-webkit-progress-inner-element CSS pseudo-element represents the outermost container of the <progress> element. It is the parent of the ::-webkit-progress-bar pseudo-element.
153 ::-webkit-progress-value CSS, Non-standard, Pseudo-element, Reference
The ::-webkit-progress-value CSS pseudo-element represents the filled-in portion of the bar of a <progress> element. It is a child of the ::-webkit-progress-bar pseudo-element.
154 ::-webkit-scrollbar ::-webkit-scrollbar, CSS, CSS Selectors, CSS:WebKit Extensions, NeedsCompatTable, Non-standard, Pseudo-element, Reference
The ::-webkit-scrollbar CSS pseudo-element affects the style of the scrollbar of an element.
155 ::-webkit-search-cancel-button CSS, NeedsExample, Non-standard, Pseudo-element, Reference
The ::-webkit-search-cancel-button CSS pseudo-element represents a button (the "cancel button") at the edge of an <input> of type="search" which clears away the current value of the <input> element. This button and pseudo-element are non-standard, supported only in WebKit and Blink, hence the vendor prefix. The clear button is only shown on non-empty search <input> elements.
156 ::-webkit-search-results-button CSS, NeedsExample, Non-standard, Pseudo-element, Reference
The ::-webkit-search-results-button CSS pseudo-element represents a button (the "search results button") at the left edge of an <input> of type="search" which when clicked displays a menu which allows the user to choose from previous recent search queries. This button and pseudo-element are non-standard, supported only in WebKit and Blink, hence the vendor prefix. The search results button is only shown on search <input> elements that have a results attribute.
157 ::-webkit-slider-runnable-track CSS, CSS:WebKit Extensions, NeedsBrowserCompatibility, NeedsCompatTable, NeedsExample, NeedsMobileBrowserCompatibility, Non-standard, Pseudo-element, Reference
The ::-webkit-slider-runnable-track CSS pseudo-element represents the "track" (the groove in which the indicator slides) of an <input type="range">.
158 ::-webkit-slider-thumb CSS, NeedsBrowserCompatibility, NeedsCompatTable, NeedsExample, NeedsMobileBrowserCompatibility, Non-standard, Pseudo-element, Reference
The ::-webkit-slider-thumb CSS pseudo-element represents the "thumb" that the user can move within the "groove" of an <input> of type="range" to alter its numerical value.
159 ::after (:after) CSS, Layout, Pseudo-element, Reference, Web
In CSS, ::after creates a pseudo-element that is the last child of the selected element. It is often used to add cosmetic content to an element with the content property.
160 ::backdrop API, CSS, Dialog, Full-screen, Fullscreen API, HTML DOM, Layout, Pseudo-element, Reference, fullscreen
The ::backdrop CSS pseudo-element is a box the size of the viewport which is rendered immediately beneath any element being presented in full-screen mode.
161 ::before (:before) CSS, Layout, Pseudo-element, Reference, Web
In CSS, ::before creates a pseudo-element that is the first child of the selected element. It is often used to add cosmetic content to an element with the content property.
162 ::cue ::cue, CSS, Media, Pseudo-element, Reference, Web Video Text Tracks, WebVTT, cue
The ::cue CSS pseudo-element matches WebVTT cues within a selected element. This can be used to style captions and other cues in media with VTT tracks.
163 ::cue-region ::cue-region, CSS, Media, Pseudo-element, Reference, Web Video Text Tracks, WebVTT
The ::cue-region CSS pseudo-element matches WebVTT cues within a selected element. This can be used to style captions and other cues in media with VTT tracks.
164 ::first-letter (:first-letter) CSS, Layout, Pseudo-element, Reference
The ::first-letter CSS pseudo-element applies styles to the first letter of the first line of a block-level element, but only when not preceded by other content (such as images or inline tables).
165 ::first-line (:first-line) CSS, Layout, Pseudo-element, Reference
The ::first-line CSS pseudo-element applies styles to the first line of a block-level element.
166 ::grammar-error CSS, Experimental, NeedsExample, Pseudo-element, Reference
The ::grammar-error CSS pseudo-element represents a text segment which the user agent has flagged as grammatically incorrect.
167 ::marker CSS, CSS Lists, Experimental, Layout, Pseudo-element, Reference
The ::marker CSS pseudo-element selects the marker box of a list item, which typically contains a bullet or number.
168 ::part() ::part, CSS, Draft, Experimental, NeedsBrowserCompatibility, NeedsExample, Pseudo-element, Reference
The ::part CSS pseudo-element represents any element within a shadow tree that has a matching part attribute.
169 ::placeholder ::placeholder, CSS, Pseudo-element, Reference
The ::placeholder CSS pseudo-element represents the placeholder text in an <input> or <textarea> element.
170 ::selection CSS, Layout, Pseudo-element, Reference
The ::selection CSS pseudo-element applies styles to the part of a document that has been highlighted by the user (such as clicking and dragging the mouse across text).
171 ::slotted() ::slotted, CSS, Layout, Pseudo-element, Reference, Web
The ::slotted() CSS pseudo-element represents any element that has been placed into a slot inside an HTML template (see Using templates and slots for more information).
172 ::spelling-error CSS, Experimental, NeedsExample, Pseudo-element, Reference, Web
The ::spelling-error CSS pseudo-element represents a text segment which the user agent has flagged as incorrectly spelled.
173 :active CSS, Layout, Pseudo-class, Reference, Web
The :active CSS pseudo-class represents an element (such as a button) that is being activated by the user.
174 :any-link CSS, Experimental, Layout, Pseudo-class, Reference, Web
The :any-link CSS pseudo-class selector represents an element that acts as the source anchor of a hyperlink, independent of whether it has been visited. In other words, it matches every <a>, <area>, or <link> element that has an href attribute. Thus, it matches all elements that match :link or :visited.
175 :blank :blank, CSS, CSS Selectors, Draft, Experimental, NeedsContent, NeedsExample, Pseudo-class
The :blank CSS pseudo-class selects empty user input elements (eg. <input> or <textarea>).
176 :checked CSS, Layout, Pseudo-class, Reference, Web
The :checked CSS pseudo-class selector represents any radio (<input type="radio">), checkbox (<input type="checkbox">), or option (<option> in a <select>) element that is checked or toggled to an on state.
177 :default CSS, Layout, Pseudo-class, Reference, Web
The :default CSS pseudo-class selects form elements that are the default in a group of related elements.
178 :defined CSS, Layout, Pseudo-class, Reference, Web
The :defined CSS pseudo-class represents any element that has been defined. This includes any standard element built in to the browser, and custom elements that have been successfully defined (i.e. with the CustomElementRegistry.define() method).
179 :dir() BiDi, CSS, Experimental, Pseudo-class, Reference
The :dir() CSS pseudo-class matches elements based on the directionality of the text contained in them.
180 :disabled CSS, Layout, Pseudo-class, Reference, Web
The :disabled CSS pseudo-class represents any disabled element. An element is disabled if it can't be activated (selected, clicked on, typed into, etc.) or accept focus. The element also has an enabled state, in which it can be activated or accept focus.
181 :empty CSS, Layout, NeedsUpdate, Pseudo-class, Reference, Web
The :empty CSS pseudo-class represents any element that has no children. Children can be either element nodes or text (including whitespace). Comments, processing instructions, and CSS content do not affect whether an element is considered empty.
182 :enabled CSS, Layout, Pseudo-class, Reference, Web
The :enabled CSS pseudo-class represents any enabled element. An element is enabled if it can be activated (selected, clicked on, typed into, etc.) or accept focus. The element also has a disabled state, in which it can't be activated or accept focus.
183 :first @page, CSS, Layout, Pseudo-class, Reference, Web
The :first CSS pseudo-class, used with the  @page at-rule, represents the first page of a printed document.
184 :first-child CSS, Layout, Pseudo-class, Reference, Web
The :first-child CSS pseudo-class represents the first element among a group of sibling elements.
185 :first-of-type CSS, Layout, Pseudo-class, Reference, Web
The :first-of-type CSS pseudo-class represents the first element of its type among a group of sibling elements.
186 :focus :focus, CSS, Layout, Pseudo-class, Reference, Web
The :focus CSS pseudo-class represents an element (such as a form input) that has received focus. It is generally triggered when the user clicks or taps on an element or selects it with the keyboard's "tab" key.
187 :focus-visible :focus, :focus-visible, CSS, Experimental, Layout, Pseudo-class, Reference, Web
The :focus-visible pseudo-class applies while an element matches the :focus pseudo-class and the UA (User Agent) determines via heuristics that the focus should be made evident on the element. (Many browsers show a “focus ring” by default in this case.)
188 :focus-within :focus, :focus-within, CSS, Layout, Pseudo-class, Reference, Web
The :focus-within CSS pseudo-class represents an element that has received focus or contains an element that has received focus. In other words, it represents an element that is itself matched by the :focus pseudo-class or has a descendant that is matched by :focus. (This includes descendants in shadow trees.)
189 :fullscreen CSS, Full, Full-screen, Full-screen API, Fullscreen API, Pseudo-class, Reference, fullscreen, screen
The :fullscreen CSS pseudo-class matches every element which is currently in full-screen mode. If multiple elements have been put into full-screen mode, this selects them all.
190 :has() CSS, Experimental, Pseudo-class, Reference, Selectors
The :has() CSS pseudo-class represents an element if any of the selectors passed as parameters (relative to the :scope of the given element), match at least one element.
191 :host :host, CSS, DOM, Layout, Pseudo-class, Reference, Web, Web Components, shadow, shadow dom
The :host CSS pseudo-class selects the shadow host of the shadow DOM containing the CSS it is used inside — in other words, this allows you to select a custom element from inside its shadow DOM.
192 :host() :host(), CSS, Layout, Pseudo-class, Reference, Web
The :host() CSS pseudo-class function selects the shadow host of the shadow DOM containing the CSS it is used inside (so you can select a custom element from inside its shadow DOM) — but only if the selector given as the function's parameter matches the shadow host.
193 :host-context() :host-context(), CSS, Experimental, Layout, Pseudo-class, Reference, Web
The :host-context() CSS pseudo-class function selects the shadow host of the shadow DOM containing the CSS it is used inside (so you can select a custom element from inside its shadow DOM) — but only if the selector given as the function's parameter matches the shadow host's ancestor(s) in the place it sits inside the DOM hierarchy.
194 :hover CSS, Layout, Pseudo-class, Reference, Web
The :hover CSS pseudo-class matches when the user interacts with an element with a pointing device, but does not necessarily activate it. It is generally triggered when the user hovers over an element with the cursor (mouse pointer).
195 :in-range CSS, Pseudo-class, Reference, Web
The :in-range CSS pseudo-class represents an <input> element whose current value is within the range limits specified by the min and max attributes.
196 :indeterminate CSS, Layout, Pseudo-class, Reference, Web
The :indeterminate CSS pseudo-class represents any form element whose state is indeterminate.
197 :invalid CSS, Layout, Pseudo-class, Reference, Web
The :invalid CSS pseudo-class represents any <input> or other <form> element whose contents fail to validate.
198 :is() (:matches(), :any()) :is, CSS, Experimental, Pseudo-class, Reference, Selectors, Web
The :is() CSS pseudo-class function takes a selector list as its argument, and selects any element that can be selected by one of the selectors in that list. This is useful for writing large selectors in a more compact form.
199 :lang() CSS, Layout, Pseudo-class, Reference, Web
The :lang() CSS pseudo-class matches elements based on the language they are determined to be in.
200 :last-child CSS, Layout, Pseudo-class, Reference, Web
The :last-child CSS pseudo-class represents the last element among a group of sibling elements.
201 :last-of-type CSS, Layout, Pseudo-class, Reference, Web
The :last-of-type CSS pseudo-class represents the last element of its type among a group of sibling elements.
202 :left @page, CSS, Layout, Pseudo-class, Reference, Web
The :left CSS pseudo-class, used with the @page at-rule, represents all left-hand pages of a printed document.
203 :link CSS, Layout, Pseudo-class, Reference, Web
The :link CSS pseudo-class represents an element that has not yet been visited. It matches every unvisited <a>, <area>, or <link> element that has an href attribute.
204 :not() CSS, Layout, Pseudo-class, Reference, Web
The :not() CSS pseudo-class represents elements that do not match a list of selectors. Since it prevents specific items from being selected, it is known as the negation pseudo-class.
205 :nth-child() CSS, Layout, Pseudo-class, Reference, Web
The :nth-child() CSS pseudo-class matches elements based on their position in a group of siblings.
206 :nth-last-child() CSS, Layout, Pseudo-class, Reference, Web
The :nth-last-child() CSS pseudo-class matches elements based on their position among a group of siblings, counting from the end.
207 :nth-last-of-type() CSS, Layout, Pseudo-class, Reference, Web
The :nth-last-of-type() CSS pseudo-class matches elements of a given type, based on their position among a group of siblings, counting from the end.
208 :nth-of-type() CSS, Layout, Pseudo-class, Reference, Web
The :nth-of-type() CSS pseudo-class matches elements of a given type, based on their position among a group of siblings.
209 :only-child CSS, Layout, Pseudo-class, Reference, Web
The :only-child CSS pseudo-class represents an element without any siblings. This is the same as :first-child:last-child or :nth-child(1):nth-last-child(1), but with a lower specificity.
210 :only-of-type CSS, Layout, Pseudo-class, Reference, Web
The :only-of-type CSS pseudo-class represents an element that has no siblings of the same type.
211 :optional CSS, Layout, Pseudo-class, Reference, Web
The :optional CSS pseudo-class represents any <input>, <select>, or <textarea> element that does not have the required attribute set on it.
212 :out-of-range CSS, Layout, Pseudo-class, Reference, Selectors, UI Selector
The :out-of-range CSS pseudo-class represents an <input> element whose current value is outside the range limits specified by the min and max attributes.
213 :placeholder-shown :placeholder-shown, CSS, Pseudo-class, Reference
The :placeholder-shown CSS pseudo-class represents any <input> or <textarea> element that is currently displaying placeholder text.
214 :read-only CSS, Layout, Pseudo-class, Reference, Web
The :read-only CSS pseudo-class represents an element (such as input or textarea) that is not editable by the user.
215 :read-write CSS, Layout, Pseudo-class, Reference, Web
The :read-write CSS pseudo-class represents an element (such as input or textarea) that is editable by the user.
216 :required CSS, Layout, Pseudo-class, Reference, Web
The :required CSS pseudo-class represents any <input>, <select>, or <textarea> element that has the required attribute set on it.
217 :right @page, CSS, Layout, Pseudo-class, Reference, Web
The :right CSS pseudo-class, used with the @page at-rule, represents all right-hand pages of a printed document.
218 :root CSS, Layout, Pseudo-class, Reference, Web
The :root CSS pseudo-class matches the root element of a tree representing the document. In HTML, :root represents the <html> element and is identical to the selector html, except that its specificity is higher.
219 :scope :scope, CSS, Layout, Pseudo-class, Reference, Scoped Elements, Web
The :scope CSS pseudo-class represents elements that are a reference point for selectors to match against.
220 :state() :state, CSS, Draft, Experimental, NeedsBrowserCompatibility, NeedsExample, Pseudo-class, Reference
The :state CSS pseudo-class represents any custom element with the specified custom state in ElementInternals.states.
221 :target CSS, Layout, Pseudo-class, Reference, Web
The :target CSS pseudo-class represents a unique element (the target element) with an id matching the URL's fragment.
222 :valid CSS, Layout, Pseudo-class, Reference, Web
The :valid CSS pseudo-class represents any <input> or other <form> element whose contents validate successfully. This allows to easily make valid fields adopt an appearance that helps the user confirm that their data is formatted properly.
223 :visited CSS, Layout, Pseudo-class, Reference, Web
The :visited CSS pseudo-class represents links that the user has already visited. For privacy reasons, the styles that can be modified using this selector are very limited.
224 :where() :where, CSS, Experimental, NeedsBrowserCompatibility, NeedsContent, NeedsExample, Pseudo-class, Reference, Selectors, Web
The :where() CSS pseudo-class function takes a selector list as its argument, and selects any element that can be selected by one of the selectors in that list.
225 <angle-percentage> CSS, CSS Data Type, Reference, angle-percentage, units, values
The <angle-percentage> CSS data type represents a value that can be either a <angle> or a <percentage>.
226 <angle> CSS, CSS Data Type, Layout, Reference, Web
The <angle> CSS data type represents an angle value expressed in degrees, gradians, radians, or turns. It is used, for example, in <gradient>s and in some transform functions.
227 <basic-shape> CSS, CSS Data Type, CSS Shapes, Reference
The <basic-shape> CSS data type represents a shape used in the clip-path, shape-outside, and offset-path properties.
228 <blend-mode> Blend modes, CSS, CSS Data Type, Compositing, Compositing and Blending, Reference, color
The <blend-mode> CSS data type describes how colors should appear when elements overlap. It is used in the background-blend-mode and mix-blend-mode properties.
229 <color> CSS, CSS Data Type, Layout, Reference, Web, color, hsl, hsla, rgb, rgba, unit
The <color> CSS data type represents a color in the sRGB color space. A <color> may also include an alpha-channel transparency value, indicating how the color should composite with its background.
230 <custom-ident> CSS, CSS Data Type, Layout, Reference, Web
The <custom-ident> CSS data type denotes an arbitrary user-defined string used as an identifier. It is case-sensitive, and certain values are forbidden in various contexts to prevent ambiguity.
231 <dimension> CSS, CSS Data Type, Reference, dimension, unit, value
The <dimension> CSS data type represents a <number> with a unit attached to it, for example 10px.
232 <display-box> CSS, CSS Data Type, CSS Display, Reference, display-box
These keywords define whether an element generates display boxes at all.
233 <display-inside> CSS, CSS Data Type, CSS Display, Reference, display-inside
These keywords specify the element’s inner display type, which defines the type of formatting context that lays out its contents (assuming it is a non-replaced element). These keywords are used as values of the display property, and can be used for legacy purposes as a single keyword, or as defined in the Level 3 specification alongside a value from the <display-outside> keywords.
234 <display-internal> CSS, CSS Data Type, CSS Display, Reference, display-internal
Some layout models such as table and ruby have a complex internal structure, with several different roles that their children and descendants can fill. This page defines those "internal" display values, which only have meaning within that particular layout mode.
235 <display-legacy> CSS, CSS Data Type, CSS Display, Reference, display-legacy
CSS 2 used a single-keyword syntax for the display property, requiring separate keywords for block-level and inline-level variants of the same layout mode. This page details those values.
236 <display-listitem> CSS, CSS Data Type, CSS Display, Reference, display-listitem, list-item
The list-item keyword causes the element to generate a ::marker pseudo-element with the content specified by its list-style properties (for example a bullet point) together with a principal box of the specified type for its own contents.
237 <display-outside> CSS, CSS Data Type, CSS Display, Reference, display-outside
The <display-outside> keywords specify the element’s outer display type, which is essentially its role in flow layout. These keywords are used as values of the display property, and can be used for legacy purposes as a single keyword, or as defined in the Level 3 specification alongside a value from the <display-inside> keywords.
238 <easing-function> API, CSS, CSS Animations, CSS Data Type, CSS Transitions, Layout, Reference, easing-function
The <easing-function> CSS data type denotes a mathematical function that describes how fast one-dimensional values change during animations. This lets you vary the animation's speed over the course of its duration.
239 <filter-function> CSS, CSS Data Type, Filter Effects, NeedsCompatTable, Reference
The <filter-function> CSS data type represents a graphical effect that can change the appearance of an input image. It is used in the filter and backdrop-filter properties.
240 blur() CSS, CSS Function, Filter Effects, Reference
The blur() CSS function applies a Gaussian blur to the input image. Its result is a <filter-function>.
241 brightness() CSS, CSS Function, Filter Effects, Reference
The brightness() CSS function applies a linear multiplier to the input image, making it appear brighter or darker. Its result is a <filter-function>.
242 contrast() CSS, CSS Function, Filter Effects, Reference
The contrast() CSS function adjusts the contrast of the input image. Its result is a <filter-function>.
243 drop-shadow() CSS, CSS Function, Filter Effects, Reference
The drop-shadow() CSS function applies a drop shadow effect to the input image. Its result is a <filter-function>.
244 grayscale() CSS, CSS Function, Filter Effects, Reference
The grayscale() CSS function converts the input image to grayscale. Its result is a <filter-function>.
245 hue-rotate() CSS, CSS Function, Filter Effects, Reference
The hue-rotate() CSS function rotates the hue of an element and its contents. Its result is a <filter-function>.
246 invert() CSS, CSS Function, Filter Effects, Reference
The invert() CSS function inverts the color samples in the input image. Its result is a <filter-function>.
247 opacity() CSS, CSS Function, Filter Effects, Reference
The opacity() CSS function applies transparency to the samples in the input image. Its result is a <filter-function>.
248 saturate() CSS, CSS Function, Filter Effects, Reference
The saturate() CSS function super-saturates or desaturates the input image. Its result is a <filter-function>.
249 sepia() CSS, CSS Function, Filter Effects, Reference
The sepia() CSS function converts the input image to sepia, giving it a warmer, more yellow/brown appearance. Its result is a <filter-function>.
250 url() CSS, Junk, Reference
The url() CSS function uses an SVG filter to change the appearance on the input image.
251 <flex> CSS, CSS Data Type, Layout, Reference, Web
The <flex> CSS data type denotes a flexible length within a grid container. It is used in grid-template-columns, grid-template-rows and other related properties.
252 <frequency-percentage> CSS, CSS Data Type, Reference, frequency-percentage, units, values
The <frequency-percentage> CSS data type represents a value that can be either a <frequency> or a <percentage>.
253 <frequency> CSS, CSS Data Type, Reference, Web
The <frequency> CSS data type represents a frequency dimension, such as the pitch of a speaking voice. It is not currently used in any CSS properties.
254 <gradient> CSS, CSS Data Type, CSS Images, Graphics, Layout, Reference
The <gradient> CSS data type is a special type of <image> that consists of a progressive transition between two or more colors.
255 <image> CSS, CSS Data Type, CSS Images, Graphics, Layout, Reference, Web
The <image> CSS data type represents a two-dimensional image. There are two kinds of images: plain images, referenced with a <url>, and dynamically-generated images, generated with <gradient> or element(). Additional CSS image functions include image(), image-set(), and cross-fade(). Images can be used with numerous CSS properties, such as background-image, border-image, content, cursor, and list-style-image.
256 <integer> CSS, CSS Data Type, Reference, Web
The <integer> CSS data type is a special type of <number> that represents a whole number, whether positive or negative. Integers can be used in numerous CSS properties, such as column-count, counter-increment, grid-column, grid-row, and z-index.
257 <length-percentage> CSS, CSS Data Type, Reference, length-percentage, units, values
The <length-percentage> CSS data type represents a value that can be either a <length> or a <percentage>.
258 <length> CSS, CSS Data Type, Layout, Reference, Web, length
The <length> CSS data type represents a distance value. Lengths can be used in numerous CSS properties, such as width, height, margin, padding, border-width, font-size, and text-shadow.
259 <number> CSS, CSS Data Type, Layout, Reference, Web
The <number> CSS data type represents a number, being either an integer or a number with a fractional component.
260 <percentage> CSS, CSS Data Type, Layout, Reference, Web
The <percentage> CSS data type represents a percentage value. It is often used to define a size as relative to an element's parent object. Numerous properties can use percentages, such as width, height, margin, padding, and font-size.
261 <position> CSS, CSS Data Type, Layout, Reference, Web
The <position> (or <bg-position>) CSS data type denotes a two-dimensional coordinate used to set a location relative to an element box. It is used in the background-position and offset-anchor properties.
262 <ratio> CSS, CSS Data Type, Layout, Reference, Web
The <ratio> CSS data type, used for describing aspect ratios in media queries, denotes the proportion between two unitless values.
263 <resolution> CSS, CSS Data Type, Layout, Reference, Web
The <resolution> CSS data type, used for describing resolutions in media queries, denotes the pixel density of an output device, i.e., its resolution.
264 <shape> CSS, CSS Data Type, CSS Function, Deprecated, Layout, Reference, Web
The <shape> CSS data type defines the specific form (shape) of a region. The region represents the part of an element to which the clip property applies.
265 <string> CSS, CSS Data Type, Layout, Reference, Web
The <string> CSS data type represents a sequence of characters. Strings are used in numerous CSS properties, such as content, font-family, and quotes.
266 <time-percentage> CSS, CSS Data Type, Reference, time-percentage, units, values
The <time-percentage> CSS data type represents a value that can be either a <time> or a <percentage>.
267 <time> CSS, CSS Data Type, Layout, Reference, Web
The <time> CSS data type represents a time value expressed in seconds or milliseconds. It is used in animation, transition, and related properties.
268 <transform-function> CSS, CSS Data Type, CSS Transforms, Layout, Reference
The <transform-function> CSS data type represents a transformation that affects an element's appearance. Transformation functions can rotate, resize, distort, or move an element in 2D or 3D space. It is used in the transform property.
269 matrix() CSS, CSS Function, CSS Transforms, Reference
The matrix() CSS function defines a homogeneous 2D transformation matrix. Its result is a <transform-function> data type.
270 matrix3d() CSS, CSS Function, CSS Transforms, Reference
The matrix3d() CSS function defines a 3D transformation as a 4x4 homogeneous matrix. Its result is a <transform-function> data type.
271 perspective() CSS, CSS Function, CSS Transforms, Reference
The perspective() CSS function defines a transformation that sets the distance between the user and the z=0 plane, the perspective from which the viewer would be if the 2-dimensional interface were 3-dimensional. Its result is a <transform-function> data type.
272 rotate() CSS, CSS Function, CSS Transforms, Reference
The rotate() CSS function defines a transformation that rotates an element around a fixed point on the 2D plane, without deforming it. Its result is a <transform-function> data type.
273 rotate3d() CSS, CSS Function, CSS Transforms, Reference
The rotate3d() CSS function defines a transformation that rotates an element around a fixed axis in 3D space, without deforming it. Its result is a <transform-function> data type.
274 rotateX() CSS, CSS Function, CSS Transforms, Reference
The rotateX() CSS function defines a transformation that rotates an element around the abscissa (horizontal axis) without deforming it. Its result is a <transform-function> data type.
275 rotateY() CSS, CSS Function, CSS Transforms, Reference
The rotateY() CSS function defines a transformation that rotates an element around the ordinate (vertical axis) without deforming it. Its result is a <transform-function> data type.
276 rotateZ() CSS, CSS Function, CSS Transforms, Reference
The rotateZ() CSS function defines a transformation that rotates an element around the z-axis without deforming it. Its result is a <transform-function> data type.
277 scale() CSS, CSS Function, CSS Transforms, Reference
The scale() CSS function defines a transformation that resizes an element on the 2D plane. Because the amount of scaling is defined by a vector, it can resize the horizontal and vertical dimensions at different scales. Its result is a <transform-function> data type.
278 scale3d() CSS, CSS Function, CSS Transforms, Reference
The scale3d() CSS function defines a transformation that resizes an element in 3D space. Because the amount of scaling is defined by a vector, it can resize different dimensions at different scales. Its result is a <transform-function> data type.
279 scaleX() CSS, CSS Function, CSS Transforms, Reference
The scaleX() CSS function defines a transformation that resizes an element along the x-axis (horizontally). Its result is a <transform-function> data type.
280 scaleY() CSS, CSS Function, CSS Transforms, Reference, transform: rotateX(180deg);, transform: scaleY(-1);
The scaleY() CSS function defines a transformation that resizes an element along the y-axis (vertically). Its result is a <transform-function> data type.
281 scaleZ() CSS, CSS Function, CSS Transforms, Reference
The scaleZ() CSS function defines a transformation that resizes an element along the z-axis. Its result is a <transform-function> data type.
282 skew() CSS, CSS Function, CSS Transforms, Reference
The skew() CSS function defines a transformation that skews an element on the 2D plane. Its result is a <transform-function> data type.
283 skewX() CSS, CSS Function, CSS Transforms, Reference
The skewX() CSS function defines a transformation that skews an element in the horizontal direction on the 2D plane. Its result is a <transform-function> data type.
284 skewY() CSS, CSS Function, CSS Transforms, Reference
The skewY() CSS function defines a transformation that skews an element in the vertical direction on the 2D plane. Its result is a <transform-function> data type.
285 translate() CSS, CSS Function, CSS Transforms, Reference
The translate() CSS function repositions an element in the horizontal and/or vertical directions. Its result is a <transform-function> data type.
286 translate3d() CSS, CSS Function, CSS Transforms, Reference
The translate3d() CSS function repositions an element in 3D space. Its result is a <transform-function> data type.
287 translateX() CSS, CSS Function, CSS Transforms, Reference
The translateX() CSS function repositions an element horizontally on the 2D plane. Its result is a <transform-function> data type.
288 translateY() CSS, CSS Function, CSS Transforms, Reference
The translateY() CSS function repositions an element vertically on the 2D plane. Its result is a <transform-function> data type.
289 translateZ() 3D, CSS, CSS Function, CSS Transforms, Reference
The translateZ() CSS function repositions an element along the z-axis in 3D space, i.e., closer to or farther away from the viewer. Its result is a <transform-function> data type.
290 <translation-value> CSS, CSS Data Type, CSS Transforms, Reference
The <translation-value> CSS data type is used in the arguments for certain transform functions, including translate(), translateX(), translateY(), and translate3d().
291 <url> CSS, CSS Data Type, Layout, Reference, URI, URL, urn
The <url> CSS data type denotes a pointer to a resource, such as an image or a font. URLs can be used in numerous CSS properties, such as background-image, cursor, and list-style.
292 @charset At-rule, CSS, Layout, Reference, Web
The @charset CSS at-rule specifies the character encoding used in the style sheet. It must be the first element in the style sheet and not be preceded by any character; as it is not a nested statement, it cannot be used inside conditional group at-rules. If several @charset at-rules are defined, only the first one is used, and it cannot be used inside a style attribute on an HTML element or inside the <style> element where the character set of the HTML page is relevant.
293 @counter-style At-rule, CSS, CSS Counter, Reference, counter
The @counter-style CSS at-rule lets you define counter styles that are not part of the predefined set of styles. A @counter-style rule defines how to convert a counter value into a string representation.
294 additive-symbols @counter-style, CSS, CSS Counter Styles, CSS Descriptor, Reference
The additive-symbols descriptor lets you specify symbols when the value of a counter system descriptor is additive. The additive-symbols descriptor defines additive tuples, each of which is a pair containing a symbol and a non-negative integer weight. The additive system is used to construct sign-value numbering systems such as Roman numerals.
295 fallback @counter-style, CSS, CSS Counter Styles, CSS Descriptor, Reference
The fallback descriptor can be used to specify a counter style to fall back to if the current counter style cannot create a marker representation for a particular counter value.
296 negative @counter-style, CSS, CSS Descriptor, Reference
When defining custom counter styles, the negative descriptor lets you alter the representations of negative counter values, by providing a way to specify symbols to be appended or prepended to the counter representation when the value is negative.
297 pad @counter-style, CSS, CSS Counter Styles, CSS Descriptor, Reference
The pad descriptor can be used with custom counter style definitions when you need the marker representations to have a minimum length. If a marker representation is smaller than the specified pad length, then the marker will be padded with the specified pad symbol. Marker representations longer than the pad length are constructed as normal.
298 prefix @counter-style, CSS, CSS Counter Styles, CSS Descriptor, Reference
The prefix descriptor of the @counter-style rule specifies content that will be prepended to the marker representation. If not specified, the default value will be "" (an empty string).
299 range @counter-style, CSS, CSS Counter Styles, CSS Descriptor, Reference
When defining custom counter styles, the range descriptor lets the author specify a range of counter values over which the style is applied. If a counter value is outside the specified range, then the fallback style will be used to construct the representation of that marker.
300 speak-as @counter-style, CSS, CSS Descriptor, Reference
The speak-as descriptor specifies how a counter symbol constructed with a given @counter-style will be represented in the spoken form. For example, an author can specify a counter symbol to be either spoken as its numerical value or just represented with an audio cue.
301 suffix @counter-style, CSS, CSS Counter Styles, CSS Descriptor, Reference
The suffix descriptor of the@counter-style rule specifies content that will be appended to the marker representation. If not specified, the default value will be "\2E\20" (". ", a full stop followed by a space).
302 symbols @counter-style, CSS, CSS Counter Styles, CSS Descriptor, Reference
The symbols CSS descriptor is used to specify the symbols that the specified counter system will use to construct counter representations. A symbol can be a string, image, or identifier. It is used within the @counter-style at-rule.
303 system @counter-style, CSS, CSS Counter Styles, CSS Descriptor, Reference
The system descriptor specifies the algorithm to be used for converting the integer value of a counter to a string representation. It is used in a @counter-style to define the behavior of the defined style.
304 @document At-rule, CSS, Reference
The @document CSS at-rule restricts the style rules contained within it based on the URL of the document. It is designed primarily for user-defined style sheets, though it can be used on author-defined style sheets, too.
305 @font-face @font-face, At-rule, CSS, CSS Fonts, Fonts, Reference, typography
The @font-face CSS at-rule specifies a custom font with which to display text; the font can be loaded from either a remote server or a locally-installed font on the user's own computer.
306 font-display @font-face, CSS, CSS Descriptor, CSS Fonts, Experimental, Fonts, Reference, font-display, web fonts
The font-display descriptor determines how a font face is displayed based on whether and when it is downloaded and ready to use.
307 font-family @font-face, CSS, CSS Descriptor, CSS Fonts, Reference
The font-family CSS descriptor allows authors to specify the font family for the font specified in an @font-face rule.
308 font-stretch @font-face, CSS, Reference, descriptor, font-stretch
The font-stretch CSS descriptor allows authors to specify a normal, condensed, or expanded face for the fonts specified in the @font-face rule.
309 font-style @font-face, CSS, CSS Descriptor, CSS Fonts, Reference
The font-style CSS descriptor allows authors to specify font styles for the fonts specified in the @font-face rule.
310 font-variation-settings @font-face, CSS, CSS Descriptor, CSS Fonts, Reference
The font-variation-settings CSS descriptor allows authors to specify low-level OpenType or TrueType font variations in the @font-face rule.
311 font-weight @font-face, CSS, Reference, descriptor, font-weight
The font-weight CSS descriptor allows authors to specify font weights for the fonts specified in the @font-face rule. The font-weight property can separately be used to set how thick or thin characters in text should be displayed.
312 src @font-face, CSS, CSS Descriptor, CSS Fonts, Reference
The src CSS descriptor of the @font-face rule specifies the resource containing font data. It is required for the @font-face rule to be valid.
313 unicode-range CSS, CSS Fonts, CSS Property, Experimental, Layout, Reference, Web
The unicode-range CSS descriptor sets the specific range of characters to be used from a font defined by @font-face and made available for use on the current page. If the page doesn't use any character in this range, the font is not downloaded; if it uses at least one, the whole font is downloaded.
314 @font-feature-values At-rule, CSS, CSS Fonts, Reference
The @font-feature-values CSS at-rule lets you use a common name in the font-variant-alternates property for features activated differently in OpenType. This can help simplify your CSS when using multiple fonts.
315 @import At-rule, CSS, CSS Cascade, CSS Conditional Rules, Reference
The @import CSS at-rule is used to import style rules from other style sheets. These rules must precede all other types of rules, except @charset rules; as it is not a nested statement, @import cannot be used inside conditional group at-rules.
316 @keyframes Animations, At-rule, CSS, Reference
The @keyframes CSS at-rule controls the intermediate steps in a CSS animation sequence by defining styles for keyframes (or waypoints) along the animation sequence.
317 @media @media, At-rule, CSS, Conditional, Reference
The @media CSS at-rule can be used to apply part of a style sheet based on the result of one or more media queries.
318 -moz-device-pixel-ratio @media, CSS, Deprecated, Non-standard, media feature
The -moz-device-pixel-ratio Gecko-only CSS media feature can be used to apply styles based on the number of device pixels per CSS pixel.
319 -moz-mac-graphite-theme -moz-mac-graphite-theme, @media, CSS, CSS:Mozilla Extensions, Non-standard, media feature
The -moz-mac-graphite-theme Gecko-only CSS media feature can be used to apply styles based on whether the user has the Mac OS X "Graphite" theme enabled.
320 -moz-maemo-classic -moz-maemo-classic, @media, CSS, CSS:Mozilla Extensions, Non-standard, media feature
The -moz-maemo-classic Gecko-only CSS media feature can be used to apply styles based on whether the user agent is using the original Maemo theme.
321 -moz-os-version @media, CSS, Non-standard, media feature
The -moz-os-version Gecko-only CSS media feature can be used to apply styles based on the user's version of Microsoft Windows. This can be useful for adapting application skins and other chrome code depending on the user's operating system version.
322 -moz-scrollbar-end-backward -moz-scrollbar-end-backward, @media, CSS, CSS:Mozilla Extensions, Non-standard, media feature
If the device's user interface displays a backward arrow button at the end of scrollbars, this is 1. Otherwise it's 0.
323 -moz-scrollbar-end-forward -moz-scrollbar-end-forward, @media, CSS, CSS:Mozilla Extensions, Non-standard, media feature
If the device's user interface displays a forward arrow button at the end of scrollbars, this is 1. Otherwise it's 0.
324 -moz-scrollbar-start-backward -moz-scrollbar-start-backward, @media, CSS, Mozilla, Non-standard, media feature
If the device's user interface displays a backward arrow button at the beginning of scrollbars, this is 1. Otherwise it's 0.
325 -moz-scrollbar-start-forward -moz-scrollbar-start-forward, @media, CSS, CSS:Mozilla Extensions, Non-standard, media feature
If the device's user interface displays a forward arrow button at the beginning of scrollbars, this is 1. Otherwise it's 0.
326 -moz-scrollbar-thumb-proportional -moz-scrollbar-thumb-proportional, @media, CSS, CSS:Mozilla Extensions, Non-standard, media feature
If the device's user interface displays the thumb of scrollbars proportionally (that is, sized based on the percentage of the document that is visible), this is 1. Otherwise it's 0.
327 -moz-touch-enabled -moz-touch-enabled, @media, CSS, CSS:Mozilla Extensions, Non-standard, media feature
If the device supports touch events (for a touch screen), this is 1. Otherwise it's 0.
328 -moz-windows-accent-color-in-titlebar -moz-windows-accent-color-in-titlebar, @media, CSS, CSS:Mozilla Extensions, Non-standard, media feature
The -moz-windows-accent-color-in-titlebar Gecko-only CSS media feature can be used to apply styles based on whether accent colors are enabled in Microsoft Windows titlebars.
329 -moz-windows-classic -moz-windows-classic, @media, CSS, CSS:Mozilla Extensions, Non-standard, media feature
If the user is using Windows unthemed (in classic mode instead of using uxtheme), this is 1. Otherwise it's 0.
330 -moz-windows-compositor @media, CSS, Non-standard, media feature
Media: media/visual
Accepts min/max prefixes: no
331 -moz-windows-default-theme @media, CSS, Non-standard, media feature
If the user is using one of the default Windows themes—Luna, Royale, Zune, or Aero (including Vista Basic, Vista Advanced, and Aero Glass)—this is 1. Otherwise it's 0.
332 -moz-windows-glass -moz-windows-glass, @media, CSS, CSS:Mozilla Extensions, Mozilla, Non-standard, media feature
If the user is using Windows Glass theme, this is 1; otherwise it's 0. Note that this only exists for Windows 7 and earlier.
333 -moz-windows-theme -moz-windows-theme, @media, CSS, CSS:Mozilla Extensions, Non-standard, media feature
The -moz-windows-theme Gecko-only CSS media feature is useful for customizing application skins and other chrome code to work well with the user's Windows theme.
334 -ms-high-contrast @media, CSS, Non-standard, Reference, media feature
The -ms-high-contrast CSS media feature is a Microsoft extension that describes whether the application is being displayed in high contrast mode, and with what color variation.
335 -webkit-animation @media, CSS, Reference, WebKit, media feature
The -webkit-animation Boolean CSS media feature is a Chrome extension whose value is true if vendor-prefixed CSS animations are supported.
336 -webkit-device-pixel-ratio @media, CSS, NeedsBrowserCompatibility, Non-standard, WebKit, media feature
The -webkit-device-pixel-ratio is a non-standard Boolean CSS media feature which is an alternative to the standard resolution media feature.
337 -webkit-transform-2d @media, CSS, Non-standard, Reference, WebKit, media feature
The -webkit-transform-2d Boolean CSS media feature is a Chrome extension whose value is true if vendor-prefixed CSS 2D transforms are supported.
338 -webkit-transform-3d @media, CSS, Non-standard, Reference, WebKit, media feature
The -webkit-transform-3d Boolean CSS media feature is a Chrome extension whose value is true if vendor-prefixed CSS 3D transforms are supported.
339 -webkit-transition @media, Blink, CSS, Deprecated, Non-standard, Reference, WebKit, media feature
The -webkit-transition Boolean CSS media feature is a Chrome extension whose value is true if the browsing context supports CSS transitions. It was never supported in browsers not based on WebKit or Blink.
340 Index @media, CSS, Index
Found 52 pages:
341 any-hover @media, CSS, Media Queries, Reference, media feature
The any-hover CSS media feature can be used to test whether any available input mechanism can hover over elements.
342 any-pointer @media, CSS, Media Queries, Reference, media feature
The any-pointer CSS media feature tests whether the user has any pointing device (such as a mouse), and if so, how accurate it is.
343 aspect-ratio @media, CSS, Media Queries, Reference, media feature
The aspect-ratio CSS media feature can be used to test the aspect ratio of the viewport.
344 aural CSS, Deprecated, Reference
The aural CSS media type is used for devices that have speech output capabilities.
345 color @media, CSS, Media Queries, Reference, media feature
The color CSS media feature can be used to test the number of bits per color component (red, green, blue) of the output device.
346 color-gamut @media, CSS, Media Queries, Reference, media feature
The color-gamut CSS media feature can be used to test the approximate range of colors that are supported by the user agent and the output device.
347 color-index @media, CSS, Media Queries, Reference, media feature
The color-index CSS media feature can be used to test the number of entries in the output device's color lookup table.
348 device-aspect-ratio @media, CSS, Deprecated, Media Queries, Reference, Web, media feature
The device-aspect-ratio CSS media feature can be used to test the width-to-height aspect ratio of an output device.
349 device-height @media, CSS, Deprecated, Media Queries, Reference, media feature
The device-height CSS media feature can be used to test the height of an output device's rendering surface.
350 device-width @media, CSS, Deprecated, Media Queries, Reference, media feature
The device-width CSS media feature can be used to test the width of an output device's rendering surface.
351 display-mode @media, CSS, Media Queries, Reference, display, display-mode, media feature, web app manifest
The display-mode CSS media feature can be used to test the display mode of an application. You can use it to provide a consistent user experience between launching a site from a URL and launching it from a desktop icon.
352 forced-colors CSS, Reference, media feature
The forced-colors CSS media feature is used to detect if the user agent has enabled a forced colors mode where it enforces a user-chosen limited color palette on the page.
353 grid @media, CSS, Media Queries, Reference, media feature
The grid CSS media feature can be used to test whether the output device uses a grid-based screen.
354 height @media, CSS, Media Queries, Reference, media feature
The height CSS media feature can be used to apply styles based on the height of the viewport (or the page box, for paged media).
355 hover @media, CSS, Media Queries, Reference, media feature
The hover CSS media feature can be used to test whether the user's primary input mechanism can hover over elements.
356 inverted-colors @media, CSS, Media Queries, Reference, media feature
The inverted-colors CSS media feature can be used to test whether the user agent or underlying OS is inverting colors.
357 light-level @media, CSS, Media Queries, Reference, media feature
The light-level CSS media feature can be used to test the ambient light level.
358 monochrome @media, CSS, Media Queries, Reference, media feature
The monochrome CSS media feature can be used to test the number of bits per pixel in the monochrome frame buffer of the output device.
359 orientation @media, CSS, Media Queries, NeedsBrowserCompatibility, Reference, media feature
The orientation CSS media feature can be used to test the orientation of the viewport (or the page box, for paged media).
360 overflow-block @media, CSS, Media Queries, Reference, media feature
The overflow-block CSS media feature can be used to test how the output device handles content that overflows the initial containing block along the block axis.
361 overflow-inline @media, CSS, Media Queries, Reference, media feature
The overflow-inline CSS media feature can be used to test how the output device handles content that overflows the initial containing block along the inline axis.
362 pointer @media, CSS, Media Queries, Reference, media feature
The pointer CSS media feature tests whether the user has a pointing device (such as a mouse), and if so, how accurate the primary pointing device is.
363 prefers-color-scheme @media, CSS, Reference, Web, prefers-color-scheme
The prefers-color-scheme CSS media feature is used to detect if the user has requested the system use a light or dark color theme.
364 prefers-contrast CSS, Reference, media feature
The prefers-contrast CSS media feature is used to detect if the user has requested that the web content is presented with a higher (or lower) contrast.
365 prefers-reduced-data @media, CSS, Media Queries, Reference, media feature
The prefers-reduced-data CSS media feature is used to detect if the user has requested the web content that consumes less internet traffic.
366 prefers-reduced-motion @media, Accessibility, CSS, Media Queries, Reference, media feature
The prefers-reduced-motion CSS media feature is used to detect if the user has requested that the system minimize the amount of animation or motion it uses.
367 prefers-reduced-transparency CSS, Reference, media feature
The prefers-reduced-transparency CSS media feature is used to detect if the user has requested that the system minimize the amount of transparency used across elements.
368 resolution @media, CSS, Media Queries, Reference, media feature
The resolution CSS media feature can be used to test the pixel density of the output device.
369 scan @media, CSS, Media Queries, Reference, media feature
The scan CSS media feature can be used to test the scanning process (if any) utilized by the output device. The word scanning used in this context does not refer to an image scanner, such as one used to digitize a photograph. Rather, it means the process by which an image is painted onto a television screen (or other device).
370 scripting @media, CSS, Media Queries, Reference, media feature
The scripting CSS media feature can be used to test whether scripting (such as JavaScript) is available.
371 shape @media, At-rule, CSS, Reference
The shape CSS media feature can be used to test the shape of the device to distinguish recrangular and round displays.
372 update @media, CSS, Media Queries, Reference, media feature
The update CSS media feature can be used to test how frequently (if at all) the output device is able to modify the appearance of content.
373 width @media, CSS, Media Queries, Reference, media feature
The width CSS media feature can be used to test the width of the viewport (or the page box, for paged media).
374 @namespace At-rule, CSS, CSS Namespaces, Layout, Reference, Web
@namespace is an at-rule that defines XML namespaces to be used in a CSS style sheet. The defined namespaces can be used to restrict the universal, type, and attribute selectors to only select elements within that namespace. The @namespace rule is generally only useful when dealing with documents containing multiple namespaces—such as HTML5 with inline SVG or MathML, or XML that mixes multiple vocabularies.
375 @page @page, At-rule, CSS, Layout, Reference, Web
The @page CSS at-rule is used to modify some CSS properties when printing a document. You can't change all CSS properties with @page. You can only change the margins, orphans, widows, and page breaks of the document. Attempts to change any other CSS properties will be ignored.
376 bleed @page, CSS, CSS Descriptor, Experimental, NeedsBrowserCompatibility, NeedsMobileBrowserCompatibility, Reference, Web
The bleed CSS at-rule descriptor, used with the @page at-rule, specifies the extent of the page bleed area outside the page box. This property only has effect if crop marks are enabled using the marks property.
377 marks @page, CSS, CSS Descriptor, Experimental, Layout, Reference, Web
The marks CSS at-rule descriptor, used with the @page at-rule, adds crop and/or cross marks to the presentation of the document. Crop marks indicate where the page should be cut. Cross marks are used to align sheets.
378 size @page, CSS, CSS Descriptor, Experimental, NeedsBrowserCompatibility, Reference, Web
The size CSS at-rule descriptor, used with the @page at-rule, defines the size and orientation of the box which is used to represent a page. Most of the time, this size corresponds to the target size of the printed page if applicable.
379 @styleset CSS, NeedsContent, Reference, Web
See @font-feature-values .
380 @supports At-rule, CSS, Layout, Reference, Web, supports
The @supports CSS at-rule lets you specify declarations that depend on a browser's support for one or more specific CSS features. This is called a feature query. The rule may be placed at the top level of your code or nested inside any other conditional group at-rule.
381 @viewport @viewport, At-rule, CSS, Experimental, Layout, Mobile, Reference, Screen Layout, viewport
The @viewport CSS at-rule lets you configure the viewport through which the document is viewed. It's primarily used for mobile devices, but is also used by desktop browsers that support features like "snap to edge" (such as Microsoft Edge).
382 height @viewport, CSS, CSS Descriptor, Reference
The height CSS descriptor is a shorthand descriptor for setting both min-height and max-height of the viewport. By providing one viewport length value will set both, the minimum height and the maximum height, to the value provided.
383 max-height @viewport, CSS, CSS Descriptor, Reference
The max-height CSS descriptor specifies the maximum height of the viewport of a document defined via the @viewport at-rule.
384 max-width @viewport, CSS, CSS Descriptor, Reference
The max-width CSS descriptor specifies the maximum width of the viewport of a document defined via the @viewport at-rule.
385 max-zoom @viewport, CSS, CSS Descriptor, NeedsE, Reference
The max-zoom CSS descriptor sets the maximum zoom factor of a document defined by the @viewport at-rule. The browser will not zoom in any further than this, whether automatically or at the user's request.
386 min-height @viewport, CSS, CSS Descriptor, Reference
The min-height CSS descriptor specifies the minimum height of the viewport of a document defined via the @viewport at-rule.
387 min-width @viewport, CSS, CSS Descriptor, Reference
The min-width CSS descriptor specifies the minimum width of the viewport of a document defined via @viewport.
388 min-zoom @viewport, CSS, CSS Descriptor, NeedsExample, Reference
The min-zoom CSS descriptor sets the minimum zoom factor of a document defined by the @viewport at-rule. The browser will not zoom out any further than this, whether automatically or at the user's request.
389 orientation @viewport, CSS, CSS Descriptor, NeedsExample, Reference
The orientation CSS descriptor controls the orientation of a document defined by @viewport.
390 user-zoom @viewport, CSS, CSS Descriptor, Graphics, Layout, NeedsBrowserCompatibility, NeedsExample, Reference, Web
The user-zoom CSS descriptor controls whether or not the user can change the zoom factor of a document defined by @viewport.
391 viewport-fit @viewport, CSS, CSS Descriptor, Experimental, Mobile, NeedsData.json, NeedsExample, Reference, Screen Layout
The viewport-fit CSS @viewport descriptor controls how a document's viewport fills the screen.
392 width @viewport, CSS, CSS Descriptor, Reference
The width CSS descriptor is shorthand for setting both the min-width and the max-width descriptors of the viewport. By providing one viewport length value, that value will determine both the min-width and the max-width to the value provided.
393 zoom @viewport, CSS, CSS Descriptor, Graphics, Layout, Reference, Web
The zoom CSS descriptor sets the initial zoom factor of a document defined by the @viewport at-rule.
394 Actual value CSS, Reference
The actual value of a CSS property is the used value of that property after any necessary approximations have been applied. For example, a user agent that can only render borders with a whole-number pixel width may round the thickness of the border to the nearest integer.
395 Adjacent sibling combinator CSS, NeedsMobileBrowserCompatibility, Reference, Selectors
The adjacent sibling combinator (+) separates two selectors and matches the second element only if it immediately follows the first element, and both are children of the same parent element.
396 Alternative style sheets CSS, HTML, NeedsCompatTable, NeedsUpdate, Reference
Specifying alternative style sheets in a web page provides a way for users to see multiple versions of a page, based on their needs or preferences.
397 Animatable CSS properties CSS, CSS Animations, CSS Transitions, Reference
Certain CSS properties can be animated using CSS Animations or CSS Transitions. Animation means that their values can be made to change gradually over a given amount of time.
398 At-rules At-rule, CSS, Reference
At-rules are CSS statements that instructs CSS how to behave. They begin with an at sign, '@' (U+0040 COMMERCIAL AT), followed by an identifier and includes everything up to the next semicolon, ';' (U+003B SEMICOLON), or the next CSS block, whichever comes first.
399 Attribute selectors Attribute selectors, CSS, Reference, Selectors
The CSS attribute selector matches elements based on the presence or value of a given attribute.
400 CSS Animations CSS, CSS Animations, Overview, Reference
CSS Animations is a module of CSS that lets you animate the values of CSS properties over time, using keyframes. The behavior of these keyframe animations can be controlled by specifying their timing function, duration, their number of repetitions, and other attributes.
401 CSS Animations tips and tricks CSS, CSS Animations, Example, Guide, Reference
CSS Animations make it possible to do incredible things with the elements that make up your documents and apps. However, there are things you might want to do that aren't obvious, or clever ways to do things that you might not come up with right away. This article is a collection of tips and tricks we've found that may make your work easier, including how to run a stopped animation again.
402 Detecting CSS animation support Advanced, CSS, CSS Animations, Guide, JavaScript, Junk, Reference
CSS animations make it possible to do creative animations of content using nothing but CSS. However, there are likely to be times when this feature isn't available, and you may wish to handle that case by using JavaScript code to simulate a similar effect. This article, based on this blog post by Chris Heilmann, demonstrates a technique for doing this.
403 Using CSS animations Advanced, CSS, CSS Animations, Example, Guide
CSS animations make it possible to animate transitions from one CSS style configuration to another.
404 CSS Backgrounds and Borders CSS, CSS Backgrounds and Borders, Overview, Reference
CSS Backgrounds and Borders is a module of CSS that lets you style elements' backgrounds and borders. Backgrounds can be filled with a color or image, clipped or resized, and otherwise modified. Borders can be decorated with lines or images, and made square or rounded. Additionally, element boxes can be decorated with a shadow.
405 Resizing background images with background-size CSS, CSS Background, Example, Guide, Intermediate, Reference, Scale, Scaling, Web, dimensions, height, resize, width
The background-size CSS property lets you resize the background image of an element, overriding the default behavior of tiling the image at its full size by specifying the width and/or height of the image.
406 Using multiple backgrounds CSS, CSS Background, Example, Guide, Reference
You can apply multiple backgrounds to elements. These are layered atop one another with the first background you provide on top and the last background listed in the back.
407 CSS Basic Box Model CSS, CSS Box Model, Overview, Reference
CSS Basic Box Model is a module of CSS that defines the rectangular boxes—including their padding and margin—that are generated for elements and laid out according to the visual formatting model.
408 Introduction to the CSS basic box model CSS, CSS Box Model, Guide, Layout
When laying out a document, the browser's rendering engine represents each element as a rectangular box according to the standard CSS basic box model. CSS determines the size, position, and properties (color, background, border size, etc.) of these boxes.
409 Mastering margin collapsing CSS, CSS Box Model, Guide, Reference
The top and bottom margins of blocks are sometimes combined (collapsed) into a single margin whose size is the largest of the individual margins (or just one of them, if they are equal), a behavior known as margin collapsing. Note that the margins of floating and absolutely positioned elements never collapse.
410 CSS Basic User Interface CSS, CSS Basic User Interface, Overview, Reference
CSS Basic User Interface is a CSS module that lets you define the rendering and functionality of features related to the user interface.
411 Using URL values for the cursor property CSS, Gecko, Guide, NeedsUpdate, Reference
Gecko 1.8 supports URL values for the CSS cursor property on Windows and Linux. Mac support was added in Gecko 2 (Firefox 4). This allows specifying arbitrary images as mouse cursors — any image format supported by Gecko can be used.
412 CSS Box Alignment CSS, CSS Box Alignment, Grid Layout, alignment, box alignment, flexbox, multi-column
The CSS Box Alignment module specifies CSS features that relate to the alignment of boxes in the various CSS box layout models: block layout, table layout, flex layout, and grid layout. The module aims to create a consistent method of alignment across all of CSS. This document details the general concepts found in the specification.
413 Box alignment for block, absolutely positioned and table layout Block, CSS, absolutely positioned, box alignment, table
The Box Alignment Specification details how alignment works in various layout methods. In this page we explore how box alignment works in the context of block layout, including floated, positioned, and table elements. As this page aims to detail things which are specific to block layout and box alignment, it should be read in conjunction with the main Box Alignment page, which details the common features of box alignment across layout methods.
414 Box alignment in Flexbox CSS, box alignment, flexbox
The Box Alignment Specification details how alignment works in various layout methods; on this page, we explore how box alignment works in the context of Flexbox. As this page aims to detail things which are specific to Flexbox and box alignment, it should be read in conjunction with the main Box Alignment page which details the common features of box alignment across layout methods.
415 Box alignment in Multi-column Layout CSS, box alignment, multi-column
The Box Alignment Specification details how alignment works in various layout methods; on this page we explore how Box Alignment works in the context of Multi-column Layout. As this page aims to detail things which are specific to Multi-column Layout and Box Alignment, it should be read in conjunction with the main Box Alignment page which details the common features of Box Alignment across layout methods.
416 Box alignment in grid layout CSS, box alignment, grid
The Box Alignment specification details how alignment works in various layout methods. On this page we explore how box alignment works in the context of CSS Grid Layout.
417 CSS Charsets CSS, CSS Charsets, Overview, Reference
CSS Charsets is a module of CSS that lets you specify the character set used in the style sheet.
418 CSS Color CSS, CSS Colors, HTML Colors, Overview, Reference, Styles, Styling HTML, colors
CSS Color is a CSS module that deals with colors, color types, color blending, opacity, and how you can apply these colors and effects to HTML content.
419 CSS Conditional Rules CSS, CSS Conditional Rules, Overview, Reference
CSS Conditional Rules is a CSS module that allows to define a set of rules that will only apply based on the capabilities of the processor or the document the style sheet is being applied to.
420 Using feature queries CSS, Conditional CSS, feature queries, progressive enhancement
Feature Queries can help you start to use newer features by enhancing a simpler display of the site used for older browsers. As you can wrap up the CSS for supporting browsers, you do not run the risk of styles used for the fallback display leaking through, as shown in our grid example above.
421 CSS Containment CSS, CSS Containment, Paint, Performance
Many webpages contain a number of sections which are independent of each other. For example a listing of article headlines and content, as in the mark-up below.
422 CSS Counter Styles CSS, CSS Counter Styles, NeedsContent, Overview, Reference
CSS Counter Styles is a module of CSS that lets you define your own counter styles.
423 CSS Custom Properties for Cascading Variables CSS, CSS Variables, Overview, Reference
CSS Custom Properties for Cascading Variables is a CSS module that allows for the creation of custom properties that can be used over and over.
424 CSS Device Adaptation CSS, CSS Device Adaptation, Overview, Reference
CSS Device Adaptation is a module of CSS that lets you define the size, zoom factor, and orientation of the viewport.
425 CSS Display CSS, CSS Display, Overview, Reference
CSS Display is a module of CSS that defines how the CSS formatting box tree is generated from the document element tree and defines properties controlling it.
426 CSS Flexible Box Layout CSS, CSS Flexible Boxes, Overview, Reference, flexbox
CSS Flexible Box Layout is a module of CSS that defines a CSS box model optimized for user interface design, and the layout of items in one dimension. In the flex layout model, the children of a flex container can be laid out in any direction, and can “flex” their sizes, either growing to fill unused space or shrinking to avoid overflowing the parent. Both horizontal and vertical alignment of the children can be easily manipulated.
427 Aligning Items in a Flex Container Align, CSS, Flex, Guide, align-content, align-items, align-self, alignment, flexbox, justify, justify-content
One of the reasons that flexbox quickly caught the interest of web developers is that it brought proper alignment capabilities to the web for the first time. It enabled proper vertical alignment, so we can at last easily center a box. In this guide, we will take a thorough look at how the alignment and justification properties work in Flexbox.
428 Backwards Compatibility of Flexbox @supports, CSS, CSS Tables, Flexible Boxes, Floats, fallbacks, feature queries, flexbox, inline-block
Flexbox is very well supported across modern browsers, however there are a few issues that you might run into. In this guide we will look at how well flexbox is supported in browsers, and look at some potential issues, resources and methods for creating workarounds and fallbacks.
429 Basic concepts of flexbox CSS, Flex, Guide, axes, concepts, container, flexbox
The Flexible Box Module, usually referred to as flexbox, was designed as a one-dimensional layout model, and as a method that could offer space distribution between items in an interface and powerful alignment capabilities. This article gives an outline of the main features of flexbox, which we will be exploring in more detail in the rest of these guides.
430 Controlling Ratios of Flex Items Along the Main Axis Basis, CSS, Flex, Guide, flexbox, free space, grow, max-content, min-content, shrink, space
In this guide we will be exploring the three properties that are applied to flex items, which enable us to control the size and flexibility of the items along the main axis — flex-grow, flex-shrink, and flex-basis. Fully understanding how these properties work with growing and shrinking items is the real key to mastering flexbox.
431 Cross-browser Flexbox mixins CSS, CSS Flexible Boxes, Reference, mixins
This article provides a set of mixins for those who want to mess around with flexbox using the native support of current browsers.
432 Mastering Wrapping of Flex Items CSS, Flex, Guide, collapsed items, flexbox, grid, wrapping
Flexbox was designed as a single dimensional layout, meaning that it deals with laying out items as a row or as a column — but not both at once. There is however the ability to wrap flex items onto new lines, creating new rows if flex-direction is row and new columns if flex-direction is column. In this guide I will explain how this works, what it is designed for and what situations really require CSS Grid Layout rather than flexbox.
433 Ordering Flex Items Accessibility, CSS, Flex, Guide, direction, flexbox, order, reverse
New layout methods such as Flexbox and Grid bring with them    the possibility of controlling the order of content. In this article we will take a look at ways in which you can change the visual order of your content when using Flexbox. We will also consider the implications of reordering items from an accessibility point of view.
434 Relationship of flexbox to other layout methods CSS, Guide, Writing Mode, box alignment, contents, display, flexbox, grid
In this article we will take a look at how Flexbox fits in with all the other CSS modules. We’ll find out which specifications you also need to take notice of if you want to learn flexbox, and find out why flexbox is different to some other modules.
435 Typical use cases of Flexbox CSS, Flexible Box, Guide, common uses, flexbox, patterns
In this guide we will take a look at some of the common use cases for flexbox — those places where it makes more sense than another layout method.
436 CSS Flow Layout CSS, CSS Flow Layout, Guide, Intermediate, Layout, Reference, flow
Normal Flow, or Flow Layout, is the way that Block and Inline elements are displayed on a page before any changes are made to their layout. The flow is essentially a set of things that are all working together and know about each other in your layout. Once something is taken out of flow it works independently.
437 Block and inline layout in normal flow CSS, CSS Flow Layout, Guide, Intermediate, Layout, Margins, flow
In this guide we have looked at how elements display in normal flow, as block and inline elements. Due to the default behaviour of these elements, an HTML document with no CSS styling at all, will display in a readable way. By understanding how normal flow works you will find layout easier, as you understand the starting point for making changes to how elements are displayed.
438 Flow Layout and Overflow CSS, Flow Layout, Guide, Intermediate, Layout, Visibility, overflow, text-overflow
Whether you are in continuous media on the web or in a Paged Media format such as print or EPUB, understanding how content overflows is useful when dealing with any layout method. By understanding how overflow works in normal flow, you should find it easier to understand the implications of overflow content in layout methods such as grid and flexbox.
439 Flow Layout and Writing Modes CSS, Flow Layout, Guide, Orientation, Writing-mode
In most cases, flow layout works as you would expect it to when changing the writing mode of the document or parts of the document. This can be used to properly typeset vertical languages or for creative reasons. CSS is making this easier by way of introducing logical properties and values so that when working in a vertical writing mode sizing can be based on element's inline and block size. This will be useful when creating components which can work in different writing-modes.
440 In Flow and Out of Flow CSS, CSS Flow Layout, Flow Layout, Guide, Intermediate, Layout, flow
In this guide we have covered the ways to take an element out of flow in order to achieve some very specific types of positioning. In the next guide we will look at a related issue, that of creating a Block Formatting Context, in Formatting Contexts Explained.
441 Introduction to formatting contexts BFC, Block Formatting Context, CSS, Formatting contexts, Guide, Intermediate, Layout, flow
In this guide, we have looked in more detail at the block and Inline formatting contexts and the important subject of creating a block formatting context (BFC). In the next guide, we will find out how normal flow interacts with different writing modes.
442 CSS Fonts CSS, CSS Fonts, Overview, Reference
CSS Fonts is a module of CSS that defines font-related properties and how font resources are loaded. It lets you define the style of a font, such as its family, size and weight, line height, and the glyph variants to use when multiple are available for a single character.
443 OpenType font features guide CSS, Fonts, Text, font-feature-settings, opentype
Font features or variants refer to different glyphs or character styles contained within an OpenType font. These include things like ligatures (special glyphs that combine characters like 'fi' or 'ffl'), kerning (adjustments to the spacing between specific letterform pairings), fractions, numeral styles, and a number of others. These are all referred to as OpenType Features, and are made available to use on the web via specific properties and a low-level control property — font-feature-settings. This article provides you with all you need to know about using OpenType font features in CSS.
444 Variable fonts guide CSS, Fonts, Text, variable fonts, web fonts
Variable fonts are an evolution of the OpenType font specification that enables many different variations of a typeface to be incorporated into a single file, rather than having a separate font file for every width, weight, or style. They let you access all the variations contained in a given font file via CSS and a single @font-face reference. This article will give you all you need to know to get you started using variable fonts.
445 CSS Fragmentation CSS, CSS Fragmentation, NeedsCompatTable, NeedsContent, Overview, Reference
CSS Fragmentation is a module of CSS that defines how content is displayed when it is broken (fragmented) across multiple pages, regions, or columns.
446 CSS Generated Content CSS, CSS Generated Content, Overview, Reference
CSS Generated Content is a module of CSS that defines how to add content to an element. Generated content can be used to add content to anonymous replaced elements or replace the content of a DOM node in very limited circumstances with a generated value.
447 CSS Grid Layout CSS, Grid Layout, Grids, Layout, Overview, Reference
CSS Grid Layout excels at dividing a page into major regions or defining the relationship in terms of size, position, and layer, between parts of a control built from HTML primitives.
448 Auto-placement in CSS Grid Layout CSS, CSS Grids, Guide
In addition to the ability to place items accurately onto a created grid, the CSS Grid Layout specification contains rules that control what happens when you create a grid and do not place some or all of the child items. You can see auto-placement in action in the simplest of ways by creating a grid on a set of items. If you give the items no placement information they will position themselves on the grid, one in each grid cell.
449 Basic Concepts of grid layout CSS, CSS Grids, Guide, Layout
CSS Grid Layout introduces a two-dimensional grid system to CSS. Grids can be used to lay out major page areas or small user interface elements. This article introduces the CSS Grid Layout and the new terminology that is part of the CSS Grid Layout Level 1 specification. The features shown in this overview will then be explained in greater detail in the rest of this guide.
450 Box alignment in CSS Grid Layout Alignment in Grids, Boxes, CSS, CSS Grid, Grid Alignment, Guide, alignment, box alignment
This guide presents demonstrations of how box alignment in grid layout works. You will see many similarities in how these properties and values work in flexbox.
451 CSS Grid Layout and Accessibility Accessibility, CSS, CSS Grids, Guide
Those of us who have been doing web development for more years than we care to remember might consider that CSS Grid is a little bit like using “tables for layout”. Back in the early days of web design, the way we constructed page layout was to use HTML tables, then fragment our design into the cells of those tables in order to create a layout. This had some advantages over the “CSS Positioning” that came afterwards, in that we could take advantage of the alignment and full height columns offered by table display. The biggest downside however was that it tied our design to the mark-up, often creating accessibility issues as it did so. In order to lay the design out in the table we often broke up the content in ways that made no sense at all when read out by a screen reader for example.
452 CSS Grid Layout and Progressive Enhancement CSS, CSS Grids, Design, Guide
we now have CSS Grid Layout support in the public versions of Firefox, Chrome, Opera, Safari and Edge. However, while evergreen browsers mean that many of us are going to see the majority of users having Grid Layout support very quickly, there are also old or non-supporting browsers to contend with. In this guide we will walk through a variety of strategies for support.
453 CSS grids, logical values and writing modes CSS, CSS Grids, Guide
For this guide, we will look at this feature of grid and other modern layout methods, learning a little about writing modes and logical vs. physical properties as we do so.
454 Grid template areas CSS, CSS Grids, Guide
In the previous guide we looked at grid lines, and how to position items against those lines. When you use CSS Grid Layout you always have lines, and this can be a straightforward way to place items on your grid. However, there is an alternate method to use for positioning items on the grid which you can use alone or in combination with line-based placement. This method involves placing our items using named template areas, and we will find out exactly how this method works. You will see very quickly why we sometimes call this the ascii-art method of grid layout!
455 Layout using named grid lines CSS, CSS Grids, Guide
In previous guides we’ve looked at placing items by the lines created by defining grid tracks and also how to place items using named template areas. In this guide we are going to look at how these two things work together when we use named lines. Line naming is incredibly useful, but some of the more baffling looking grid syntax comes from this combination of names and track sizes. Once you work through some examples it should become clearer and easier to work with.
456 Line-based placement with CSS Grid CSS, CSS Grids, Guide
In the article covering the basic concepts of grid layout, we started to look at how to position items on a grid using line numbers. In this article we will fully explore how this fundamental feature of the specification works.
457 Realizing common layouts using CSS Grid Layout CSS, CSS Grids, Guide
To round off this set of guides to CSS Grid Layout, I am going to walk through a few different layouts, which demonstrate some of the different techniques you can use when designing with grid layout. We will look at an example using grid-template-areas, a typical 12-column flexible grid system, and also a product listing using auto-placement. As you can see from this set of examples, there is often more than one way to achieve the result you want with grid layout. Choose the method you find most helpful for the problems that you are solving and the designs that you need to implement.
458 Relationship of grid layout to other layout methods CSS, CSS Grids, Guide
CSS Grid Layout has been designed to work alongside other parts of CSS, as part of a complete system for doing the layout. In this guide, I will explain how a grid fits together with other techniques you may already be using.
459 Subgrid CSS, CSS Display, CSS Grid, subgrid
Level 2 of the CSS Grid Layout specification includes a subgrid value for grid-template-columns and grid-template-rows. This guide details what subgrid does, and gives some use cases and design patterns that are solved by the feature.
460 CSS Images CSS, CSS Images, Overview, Reference
CSS Images is a module of CSS that defines what types of images can be used (the <image> type, containing URLs, gradients and other types of images), how to resize them and how they, and other replaced content, interact with the different layout models.
461 Implementing image sprites in CSS Advanced, CSS, CSS Images, Graphics, Guide, NeedsContent, Sprites, Web
Image sprites are used in numerous web apps where multiple images are used. Rather than include each image as a separate image file, it is much more memory- and bandwidth-friendly to send them as a single image; using background position as a way to distinguish between individual images in the same image file, so the number of HTTP requests is reduced.
462 Using CSS gradients Advanced, CSS, CSS Images, Example, Gradients, Guide, Web
CSS gradients are represented by the <gradient> data type, a special type of <image> made of a progressive transition between two or more colors. You can choose between three types of gradients: linear (created with the linear-gradient() function), radial (created with radial-gradient()), and conic (created with the conic-gradient() function). You can also create repeating gradients with the repeating-linear-gradient(), repeating-radial-gradient(), and repeating-conic-gradient() functions.
463 CSS Layout cookbook CSS, Layout, cookbook, recipes
The CSS layout cookbook aims to bring together recipes for common layout patterns, things you might need to implement in your own sites. In addition to providing code you can use as a starting point in your projects, these recipes highlight the different ways layout specifications can be used, and the choices you can make as a developer.
464 Breadcrumb Navigation CSS, Layout, Navigation, cookbook, flexbox
Breadcrumb navigation helps the user to understand their location in the website by providing a breadcrumb trail back to the start page.
465 Card CSS, CSS Cookbook, CSS Grid, card, css layout
This pattern is a list of "card" components with optional footers.
466 Center an element CSS, Layout, Recipe, box alignment, centering, cookbook, flexbox
In this recipe you will see how to center one box inside another. Centering both horizontally and vertically was difficult before flexbox, with the Box Alignment properties it is now straightforward.
467 Column layouts CSS, Layout, Multi-col, columns, cookbook, flexbox, grid
You will often need to create a layout which has a number of columns, and CSS provides several ways to do this. Whether you use Grid, Flexbox or Multi-column layout will depend on what you are trying to achieve, and in this recipe we explore these options.
468 Contribute a recipe CSS, Contribute, Layout, Templates, cookbook, recipes
If you would like to contribute an example for the Layout Cookbook, then this page explains the steps to take to have your example published.
469 Cookbook template CSS, Contribute, Layout, Template, cookbook, recipes
Description of the problem this recipe solves or the pattern you are demonstrating.
470 Grid wrapper CSS, Guide, Layout, cookbook, recipes
The grid wrapper pattern is useful for aligning grid content within a central wrapper, while also allowing items to break out and align to the edge of the containing element or page when desired.
471 List group with badges CSS, Layout, box alignment, cookbook, flexbox, lists
In this recipe we will create a list group pattern with badges that indicate a count.
472 Pagination CSS, CSS Cookbook, css layout, flexbox, pagination
This cookbook pattern demonstrates the navigation pattern used to display pagination, where the user can move between pages of content such as search results.
473 Recipe: Media objects CSS, Layout, Media object, Recipe, cookbook, fit-content, float, grid
The Media Object is a pattern we see all over the web. Named by Nicole Sullivan it refers to a two-column box with an image on one side and descriptive text on the other, e.g. a facebook post or tweet.
474 Split Navigation CSS, Layout, Navigation, cookbook, flexbox
A navigation pattern where one or more elements are separated from the rest of the navigation items.
475 Sticky footers CSS, Layout, Recipe, cookbook, flexbox, grid, sticky footer
A sticky footer pattern is one where the footer of your page "sticks" to the bottom of the viewport in cases where the content is shorter than the viewport height. We'll look at a couple of techniques for creating one in this recipe.
476 CSS Lists CSS, CSS Lists, Overview, Reference
CSS Lists is a module of CSS that defines how lists can be laid out and styled.
477 Consistent list indentation CSS, Guide, NeedsUpdate
One of the most common style changes made to lists is a change in the indentation distance—that is, how far the list items are pushed over to the right.This article will help you understand the problems that can occur and how to avoid them.
478 Using CSS counters Advanced, CSS, CSS Counter Styles, Guide, Layout, Reference, Web
CSS counters let you adjust the appearance of content based on its location in a document. For example, you can use counters to automatically number the headings in a webpage. Counters are, in essence, variables maintained by CSS whose values may be incremented by CSS rules to track how many times they're used.
479 CSS Logical Properties and Values CSS, CSS Logical Properties, Landing, Overview, Reference
CSS Logical Properties and Values is a module of CSS introducing logical properties and values that provide the ability to control layout through logical, rather than physical, direction and dimension mappings.
480 Basic concepts of Logical Properties and Values CSS, CSS Logical Properties, Guide, concepts, writing modes
The Logical Properties and Values Specification introduces flow-relative mappings for many of the properties and values in CSS. This article introduces the specification, and explains flow relative properties and values.
481 Logical properties for floating and positioning CSS, CSS Logical Properties, Floating, Guide, Positioning
The Logical Properties and Values specification contains logical mappings for the physical values of float and clear, and also for the positioning properties used with positioned layout. This guide takes a look at how to use these.
482 Logical properties for margins, borders and padding CSS, CSS Logical Properties, Guide, concepts, writing modes
The Logical Properties and Values specification defines flow-relative mappings for the various margin, border, and padding properties and their shorthands. In this guide we take a look at these.
483 Logical properties for sizing CSS, CSS Logical Properties, Guide, sizing, writing modes
In this guide we will explain the flow-relative mappings between physical dimension properties and logical properties used for sizing elements on our pages.
484 CSS Masking CSS, CSS Masking, Overview, Reference
CSS Masking is a CSS module that defines means, including masking and clipping, for partially or fully hiding portions of visual elements.
485 CSS Miscellaneous CSS, Overview, Reference
These pages contain CSS properties that are highly experimental or don't fit in any other categories.
486 CSS Motion Path CSS, CSS Motion Path, CSS Property, Experimental, Motion Path, Overview, Reference
Motion Path is a CSS module that allows authors to animate any graphical object along a custom path.
487 CSS Multi-column Layout CSS, CSS Multi-column Layout, Layout, Overview, Reference
CSS Multi-column Layout is a module of CSS that adds support for multi-column layouts. Support is included for establishing the number of columns in a layout, as well as how content should flow from column to column, gap sizes between columns, and column dividing lines (known as column rules) along with their appearance.
488 Basic Concepts of Multicol CSS, CSS Multi-column Layout, Guide, Layout
Multiple-column Layout, usually referred to as multicol, is a specification for laying out content into a set of column boxes much like columns in a newspaper. This guide explains how the specification works with some common use case examples.
489 Handling Overflow in Multicol CSS, CSS Multi-column Layout, Guide, Layout
In this guide we look at how multicol deals with overflow, both inside the column boxes and in situations where there is more content than will fit into the container.
490 Handling content breaks in multicol CSS, CSS Multi-column Layout, Guide, Layout
Content is broken between column boxes in multiple-column layout in the same way that it is broken between pages in paged media. In both contexts we control where and how things break by using properties of the CSS Fragmentation specification. In this guide we see how Fragmentation works in multicol.
491 Spanning and Balancing Columns CSS, CSS Multi-column Layout, Guide, Layout
In this guide we look at how to make elements span across columns inside the multicol container and how to control how the columns are filled.
492 Styling Columns CSS, CSS Multi-column Layout, Guide, Layout
This details all the current ways in which column boxes can be styled. In the next guide we will take a look at making elements inside a container span across all columns.
493 Using multi-column layouts Advanced, CSS, CSS Multi-column Layout, Guide, Layout, Web
The CSS Multi-column Layout Module extends the block layout mode to allow the easy definition of multiple columns of text.
494 CSS Namespaces CSS, CSS Namespaces, Overview, Reference, Web
CSS Namespaces is a CSS module that allows authors to specify XML namespaces in CSS.
495 CSS Overflow CSS, overflow, scrollbars, scrolling
There are two types of overflow that you might encounter in CSS. The first is described as ink overflow. This is the overflow of painting effects which do not affect layout or otherwise extend the scrollable overflow region, such as box shadows, border images, text decoration, overhanging glyphs, outlines, etc.
496 CSS Paged Media CSS, CSS Paged Media, Overview, Reference
CSS Paged Media is a module of CSS that defines how page switches are handled.
497 CSS Positioned Layout CSS, CSS Positioning, Overview, Reference
CSS Positioned Layout is a module of CSS that defines how to position elements on the page.
498 Understanding CSS z-index Advanced, CSS, Guide, Reference, Understanding_CSS_z-index, z-index
The z-index attribute lets you adjust the order of the layering of objects when rendering content.
499 Stacking context example 1 Advanced, CSS, Understanding_CSS_z-index
Let's start with a basic example. In the root stacking context we have two DIVs (DIV #1 and DIV #3), both relatively positioned, but without z-index properties. Inside DIV #1 there is an absolutely positioned DIV #2, while in DIV #3 there is an absolutely positioned DIV #4, both without z-index properties.
500 Stacking context example 2 Advanced, CSS, Understanding_CSS_z-index
This is a very simple example, but it is the key for understanding the concept of stacking context. There are the same four DIVs of the previous example, but now z-index properties are assigned on both levels of the hierarchy.
501 Stacking context example 3 Advanced, CSS, Understanding_CSS_z-index
This last example shows problems that arise when mixing several positioned elements in a multi-level HTML hierarchy and when z-indexes are assigned using class selectors.
502 Stacking with floated blocks Advanced, CSS, Guide, Reference, Understanding_CSS_z-index, z-index
For floated blocks, the stacking order is a bit different. Floating blocks are placed between non-positioned blocks and positioned blocks:
503 Stacking without the z-index property Advanced, CSS, Guide, Reference, Understanding_CSS_z-index, z-index
When the z-index property is not specified on any element, elements are stacked in the following order (from bottom to top):
504 The stacking context Advanced, CSS, Guide, Reference, z-index
The stacking context is a three-dimensional conceptualization of HTML elements along an imaginary z-axis relative to the user, who is assumed to be facing the viewport or the webpage. HTML elements occupy this space in priority order based on element attributes.
505 Using z-index Advanced, CSS, Guide, Reference, Understanding_CSS_z-index, z-index
The first part of this article, Stacking without the z-index property, explains how stacking is arranged by default. If you want to create a custom stacking order, you can use the z-index property on a positioned element.
506 CSS Properties Reference CSS, Style
The following is a basic list of the most common CSS properties with the equivalent of the DOM notation which is usually accessed from JavaScript:
507 CSS Ruby Layout CSS, CSS Ruby, Overview, Reference
CSS Ruby Layout is a module of CSS that provides the rendering model and formatting controls related to the display of ruby annotation. Ruby annotation is a form of interlinear annotation, consisting of short runs of text alongside the base text. They are typically used in East Asian documents to indicate pronunciation or to provide a short annotation.
508 CSS Scroll Snap CSS, CSS Scroll Snap, Overview, Reference
CSS Scroll Snap is a module of CSS that introduces scroll snap positions, which enforce the scroll positions that a scroll container’s scrollport may end at after a scrolling operation has completed.
509 Basic concepts of CSS Scroll Snap CSS, CSS Scroll Snap, Guide, concepts
The CSS Scroll Snap specification gives us a way to snap scrolling to certain points as the user scrolls through a document. This can be helpful in creating a more app-like experience on mobile or even on the desktop for some types of applications.
510 Browser compatibility and Scroll Snap CSS, CSS Scroll Snap, Compatibility, FAQ, Guide, Usage, browser compat, compat
In this article, we consider questions that might arise related to compatibility across browsers and versions of browsers when adding support for scroll-snap to your web site or app.
511 CSS Scroll Snap Points CSS, CSS Scroll Snap, Overview, Reference
CSS Scroll Snap Points is a module of CSS that introduces scroll snap positions. These determine the specific positions that a container’s scrollport may end at after a scrolling operation has completed.
512 CSS Scrollbars CSS, Overview, css scrollbars
CSS Scrollbars standardizes the obsolete scrollbar color properties introduced in 2000 by Windows IE 5.5.
513 CSS Shapes Boundaries, CSS, CSS Shapes, Overview, Reference, Shape, wrapping
CSS Shapes describe geometric shapes for use in CSS. For the Level 1 specification, CSS Shapes can be applied to floating elements.
514 Basic Shapes CSS, CSS Shapes, Guide, Reference
CSS Shapes can be defined using the <basic-shape> type, and in this guide I’ll explain how each of the different values accepted by this type work. They range from simple circles to complex polygons.
515 Overview of CSS Shapes CSS, CSS Shapes, Overview, shapes
The CSS Shapes Level 1 Specification describes geometric shapes in CSS. They are, in Level 1 of the specification, designed to be applied to floated items. This article provides an overview of what you can do with shapes.
516 Shapes From Images CSS, CSS Shapes, Guide
In this guide we will take a look at how we can create a shape from an image file with an alpha channel or even from a CSS Gradient. This is a very flexible way to create shapes. Rather than drawing a path with a complex polygon in CSS, you can create the shape in a graphics program and then use the path created by the pixels less opaque than a threshold value.
517 Shapes from box values Boundaries, Boxes, CSS, CSS Shapes, Margins, border-box, border-radius, box values, content-box, float, margin-box, padding-box, shapes
A straightforward way to create a shape is to use a value from the CSS Box Model. This article explains how to do this.
518 CSS Table CSS, CSS Table, Overview, Reference
CSS Table is a CSS module that defines how to lay out table data.
519 CSS Text CSS, CSS Text, Overview
CSS Text is a module of CSS that defines how to perform text manipulation, like line breaking, justification and alignment, white space handling, and text transformation.
520 CSS Text Decoration CSS, CSS Text Decoration, Overview, Reference
CSS Text Decoration is a module of CSS that defines features relating to text decoration, such as underlines, text shadows, and emphasis marks.
521 CSS Transforms CSS, CSS Transforms, Overview, Reference
CSS Transforms is a module of CSS that defines how elements styled with CSS can be transformed in two-dimensional or three-dimensional space.
522 Using CSS transforms 3D, Advanced, CSS, CSS Transforms, Graphics, Guide, Rotate, Scale, Scaling, perspective, rotation
By modifying the coordinate space, CSS transforms change the shape and position of the affected content without disrupting the normal document flow. This guide provides an introduction to using transforms.
523 CSS Transitions CSS, CSS Transitions, Overview, Reference
CSS Transitions is a module of CSS that lets you create gradual transitions between the values of specific CSS properties. The behavior of these transitions can be controlled by specifying their timing function, duration, and other attributes.
524 Using CSS transitions Advanced, CSS, CSS Transitions, CSS3 Transitions, Guide
CSS transitions provide a way to control animation speed when changing CSS properties. Instead of having property changes take effect immediately, you can cause the changes in a property to take place over a period of time.
525 CSS Tutorials CSS, Guide, Junk, Tutorial
Learning CSS may be a daunting task. In order to help you, we have written numerous tutorials about CSS. Some are aimed at complete beginners, while others present complex features to be used by more experienced users.
526 CSS Writing Modes CSS, CSS Writing Modes, Overview, Reference
CSS Writing Modes is a CSS module that defines various international writing modes, such as left-to-right (e.g. used by Latin and Indic scripts), right-to-left (e.g. used by Hebrew or Arabic scripts), bidirectional (used when mixing left-to-right and right-to-left scripts) and vertical (e.g. used by some Asian scripts).
527 CSS data types CSS, CSS Data Type, Index, Overview, Reference, Syntax, Types, data types, list
CSS data types define typical values (including keywords and units) accepted by CSS properties and functions. They are a special kind of component value type.
528 CSS documentation index CSS, Index, MDN Meta
Found 1008 pages:
529 CSS reference CSS, Overview, Reference, l10n:priority
Use this CSS reference to browse an alphabetical index of all of the standard CSS properties, pseudo-classes, pseudo-elements, data types, and at-rules. You can also browse key CSS concepts and a list of selectors organized by type. Also included is a brief DOM-CSS / CSSOM reference.
530 CSS selectors CSS, Overview, Reference, Selectors
CSS selectors define the elements to which a set of CSS rules apply.
531 Using the :target pseudo-class in selectors :target, CSS, Guide, Reference, Selectors
When a URL points at a specific piece of a document, it can be difficult for the user to notice. Find out how you can use some simple CSS to draw attention to the target of a URL and improve the user's experience.
532 CSS values and units CSS, Reference, values and units
Every CSS declaration includes a property / value pair. Depending on the property, the value can include a single integer or keyword, to a series of keywords and values with or without units. There are a common set of data types -- values and units -- that CSS properties accept.
533 CSSOM View CSS, CSSOM, CSSOM View, Layout, Overview, Reference
CSSOM View is a module of CSS that lets you manipulate the visual view of a document, in particular its scrolling behavior.
534 Coordinate systems CSS, CSSOM, CSSOM View, Coordinate systems, Coordinates, Guide, Layout, NeedsContent
When specifying the location of a pixel in a graphics context (just like when specifying coordinate systems in algebra), its position is defined relative to a fixed point in the context. This fixed point is called the origin. The position is specified as the number of pixels offset from the origin along each dimension of the context.
535 Child combinator CSS, Reference, Selectors
The child combinator (>) is placed between two CSS selectors. It matches only those elements matched by the second selector that are the direct children of elements matched by the first.
536 Class selectors CSS, Reference, Selectors
The CSS class selector matches elements based on the contents of their class attribute.
537 Column combinator CSS, Draft, Experimental, NeedsBrowserCompatibility, Reference, Selectors, Tables
The column combinator (||) is placed between two CSS selectors. It matches only those elements matched by the second selector that belong to the column elements matched by the first.
538 Comments CSS, Reference
A CSS comment is used to add explanatory notes to the code or to prevent the browser from interpreting specific parts of the style sheet. By design, comments have no effect on the layout of a document.
539 Compositing and Blending CSS, Compositing and Blending, Overview, Reference
Compositing and Blending is a CSS module that defines how shapes of different elements are combined into a single image.
540 Computed value CSS, Reference
The computed value of a CSS property is the value that is transferred from parent to child during inheritance.
541 Custom properties (--*): CSS variables CSS, CSS Custom Properties, Reference
Property names that are prefixed with --, like --example-name, represent custom properties that contain a value that can be used in other declarations using the var() function.The var() function
542 Descendant combinator CSS, Reference, Selectors
The descendant combinator — typically represented by a single space ( ) character — combines two selectors such that elements matched by the second selector are selected if they have an ancestor (parent, parent's parent, parent's parent's parent, etc) element matching the first selector. Selectors that utilize a descendant combinator are called descendant selectors.
543 Draft Implementations of CSS Features CSS, Junk, Reference
Mozilla supports a number of extensions to CSS that are prefixed with -moz-. The following list contains all Mozilla extensions that are implementations of features that are being standardized by the W3C. Proprietary features are omitted.
544 Filter Effects CSS, Filter Effects, Overview, Reference
Filter Effects is a module of CSS that defines a way of processing an element’s rendering before it is displayed in the document.
545 General sibling combinator CSS, Reference, Selectors
The general sibling combinator (~) separates two selectors and matches the second element only if it follows the first element (though not necessarily immediately), and both are children of the same parent element.
546 ID selectors CSS, Reference, Selectors
The CSS ID selector matches an element based on the value of its id attribute. In order for the element to be selected, its id attribute must match exactly the value given in the selector.
547 Inheritance CSS, Guide, Inheritance, Layout, Web
In CSS, inheritance controls what happens when no value is specified for a property on an element. Refer to any CSS property definition to see whether a specific property inherits by default ("Inherited: yes") or not ("Inherited: no").
548 Initial value CSS, Reference
The initial value of a CSS property is its default value, as listed in its definition table.
549 Inline formatting context CSS, Formatting context, Guide, Reference
This article explains the inline formatting context
550 Introducing the CSS Cascade CSS, Cascade, Guide, Introduction, Layout, Reference, Style, Style sheet, Stylesheets
This article explains what the cascade is, the order in which CSS declarations cascade, and how this affects you, the web developer.
551 Layout and the containing block CSS, CSS Position, Containers, Guide, Layout, Position, Style, blocks, containing block, size
In this article, we examine the factors that determine an element's containing block.
552 Layout mode CSS, Layout, Reference
A CSS layout mode, sometimes simply called layout, is an algorithm that determines the position and size of boxes based on the way they interact with their sibling and ancestor boxes. There are several of them:
553 List of Proprietary CSS Features CSS, Junk
This list includes proprietary extensions to CSS in different browser engines which are not experimental implementations of features being standardized (see Draft Implementations of CSS Features for a list of these).
554 Media queries CSS, Media Queries, Overview, Reference, Responsive Design
Media queries let you adapt your site or app depending on the presence or value of various device characteristics and parameters.
555 Testing media queries programmatically Advanced, CSS, DOM, Guide, JavaScript, Media Queries, MediaQueryList, Responsive Design, Web, matchMedia
The DOM provides features that can test the results of a media query programmatically, via the MediaQueryList interface and its methods and properties. Once you've created a MediaQueryList object, you can check the result of the query or receive notifications when the result changes.
556 Using Media Queries for Accessibility @media, Accessibility, Animation, CSS, media feature
Media Queries can also be used to help users with disabilities understand your website better.
557 Using media queries Advanced, CSS, Guide, Media, Media Queries, Responsive Design, Web
Media queries are useful when you want to modify your site or app depending on a device's general type (such as print vs. screen) or specific characteristics and parameters (such as screen resolution or browser viewport width).
558 Microsoft CSS extensions CSS, CSS:Microsoft Extensions, Non-standard, Overview, Reference
Microsoft applications such as Edge and Internet Explorer support a number of special Microsoft extensions to CSS. These extensions are prefixed with -ms-.
559 Mozilla CSS extensions CSS, CSS:Mozilla Extensions, Non-standard, Overview, Reference
Mozilla applications such as Firefox support a number of special Mozilla extensions to CSS, including properties, values, pseudo-elements and pseudo-classes, at-rules, and media queries.
560 Paged media CSS, Page Breaks, Reference
Paged media properties control the presentation of content for print or any other media that splits content into discrete pages. It allows you to set page breaks, control printable area, style left and right pages differently, and control breaks inside elements. Widely supported properties include:
561 Privacy and the :visited selector CSS, Guide, Pseudo-class, Reference, Security, Selectors
Before about 2010, the CSS :visited selector allowed websites to uncover a user's browsing history and figure out what sites the user had visited. This was done through window.getComputedStyle and other techniques. This process was quick to execute, and made it possible not only to determine where the user had been on the web, but could also be used to guess a lot of information about the user's identity.
562 Pseudo-classes CSS, Overview, Pseudo-class, Reference, Selectors
A CSS pseudo-class is a keyword added to a selector that specifies a special state of the selected element(s).
563 Pseudo-elements CSS, Overview, Pseudo-element, Reference, Selectors
A CSS pseudo-element is a keyword added to a selector that lets you style a specific part of the selected element(s). For example, ::first-line can be used to change the font of the first line of a paragraph.
564 Questions about CSS Beginner, CSS, Draft, Junk, NeedsContent, NeedsHelp
Cascading Style Sheets (CSS) is a rule-based language allowing developers to define styles to apply to HTML elements (or other markup structures).
565 Replaced element CSS, Layout, Reference, css layout, rendering, replaced element
In CSS, a replaced element is an element whose representation is outside the scope of CSS; they're external objects whose representation is independent of the CSS formatting model.
566 Resolved value CSS, Reference
The resolved value of a CSS property is the value returned by getComputedStyle().
567 Scaling of SVG backgrounds CSS, CSS Background, Guide, Images, Reference, SVG
Given the flexibility of SVG images, there's a lot to keep in mind when using them as background images with the background-image property, and even more to keep in mind when also scaling them using the background-size property. This article describes how scaling of SVG images is handled when using these properties.
568 Selector list CSS, Selector Lists, Selectors
The CSS selector list (,) selects all the matching nodes.
569 Shorthand properties CSS, Guide, Layout, Reference, Shorthand Properties, properties, shorthand
Shorthand properties are CSS properties that let you set the values of multiple other CSS properties simultaneously. Using a shorthand property, you can write more concise (and often more readable) style sheets, saving time and energy.
570 Specificity CSS, Example, Guide, Reference, Web
Specificity is the means by which browsers decide which CSS property values are the most relevant to an element and, therefore, will be applied. Specificity is based on the matching rules which are composed of different sorts of CSS selectors.
571 Specified value CSS, Reference
The specified value of a CSS property is the value it receives from the document's style sheet.
572 Syntax CSS, Guide, Reference, Web
The basic goal of the Cascading Stylesheet (CSS) language is to allow a browser engine to paint elements of the page with specific features, like colors, positioning, or decorations. The CSS syntax reflects this goal and its basic building blocks are:
573 Tools CSS, NeedsUpdate
CSS offers a number of powerful features that can be tricky to use, or have a number of parameters, so that it's helpful to be able to visualize them while you work on them. This page offers links to a number of useful tools that will help you build the CSS to style your content using these features.
574 Cubic Bezier Generator CSS, Tools
This is a sample tool; it lets you edit Bezier curves. This is not really yet a useful tool, but will be!
575 Linear-gradient Generator CSS, Tools
This tool can be used to create custom CSS3 linear-gradient() backgrounds.
576 Type selectors CSS, HTML, Node, Reference, Selectors
The CSS type selector matches elements by node name. In other words, it selects all elements of the given type within a document.
577 Universal selectors CSS, Reference, Selectors
The CSS universal selector (*) matches elements of any type.
578 Used value CSS, Reference
The used value of a CSS property is its value after all calculations have been performed on the computed value.
579 Using CSS custom properties (variables) CSS, CSS Variables, Custom Properties, Guide, Web, cascading variables
Custom properties (sometimes referred to as CSS variables or cascading variables) are entities defined by CSS authors that contain specific values to be reused throughout a document. They are set using custom property notation (e.g., --main-color: black;) and are accessed using the var() function (e.g., color: var(--main-color);).
580 Value definition syntax CSS, Reference, Syntax
No summary!
581 Viewport concepts Best practices, CSS, Guide, Mobile, Resource, layout viewport, viewport, virtual viewport
This article explains the concept of the viewport — what it is, its impact in terms of CSS, SVG, and mobile devices — and differentiates between the visual viewport and the layout viewport.
582 Visual formatting model CSS, CSS Box Model, Reference, visual formatting model
In CSS The Visual Formatting Model describes how user agents take the document tree, and process and display it for visual media. This includes continuous media such as a computer screen and paged media such as a book or document printed by browser print functions. Most of the information applies equally to continuous and paged media.
583 WebKit CSS extensions CSS, CSS:WebKit Extensions, Non-standard, Overview, Reference
Applications based on WebKit or Blink, such as Safari and Chrome, support a number of special WebKit extensions to CSS. These extensions are generally prefixed with -webkit-. Most -webkit- prefixed properties also work with an -apple- prefix. A few are prefixed with -epub-.
584 align-content CSS, CSS Box Alignment, CSS Property, Reference
The CSS align-content property sets the distribution of space between and around content items along a flexbox's cross-axis or a grid's block axis.
585 align-items CSS, CSS Flexible Boxes, CSS Property, Reference
The CSS align-items property sets the align-self value on all direct children as a group.
586 align-self CSS, CSS Box Alignment, CSS Flexible Boxes, CSS Property, Reference
The align-self CSS property overrides a grid or flex item's align-items value. In Grid, it aligns the item inside the grid area. In Flexbox, it aligns the item on the cross axis.
587 all CSS, CSS Cascade, CSS Property, Reference
The all shorthand CSS property resets all of an element's properties (except unicode-bidi and direction).
588 alpha-value Alpha-value, CSS, Draft, Example
The <alpha-value> CSS data type represents a value that can be either a <number> or a <percentage>, specifying the alpha channel or transparency of a color.
589 animation CSS, CSS Animations, CSS Property, Reference
The animation shorthand CSS property applies an animation between styles.
590 animation-delay CSS, CSS Animations, CSS Property, Reference
The animation-delay CSS property sets when an animation starts. The animation can start later, immediately from its beginning, or immediately and partway through the animation.
591 animation-direction CSS, CSS Animations, CSS Property, Reference
The animation-direction CSS property sets whether an animation should play forwards, backwards, or alternating back and forth.
592 animation-duration CSS, CSS Animations, CSS Property, Reference
The animation-duration CSS property sets the length of time that an animation takes to complete one cycle.
593 animation-fill-mode CSS, CSS Animations, CSS Property, Reference
The animation-fill-mode CSS property sets how a CSS animation applies styles to its target before and after its execution.
594 animation-iteration-count CSS, CSS Animations, CSS Property, CSS Property Animations
The animation-iteration-count CSS property sets the number of times an animation cycle should be played before stopping.
595 animation-name CSS, CSS Animations, CSS Property, Reference
The animation-name CSS property sets one or more animations to apply to an element. Each name is an @keyframes at-rule that sets the property values for the animation sequence.
596 animation-play-state CSS, CSS Animations, CSS Property, Reference
The animation-play-state CSS property sets whether an animation is running or paused.
597 animation-timing-function CSS, CSS Animations, CSS Property, Reference
The animation-timing-function CSS property sets how an animation progresses through the duration of each cycle.
598 appearance (-moz-appearance, -webkit-appearance) -moz-appearance, -webkit-appearance, CSS, CSS Basic User Interface, CSS Property, Experimental, Reference, appearance
The -moz-appearance CSS property is used in Gecko (Firefox) to display an element using platform-native styling based on the operating system's theme.
599 aspect-ratio CSS, Images, Reference, aspect-ratio
The aspect-ratio   CSS property sets a preferred aspect ratio for the box, which will be used in the calculation of auto sizes and some other layout functions.
600 attr() CSS, CSS Function, Layout, Reference, Web, attr
The attr() CSS function is used to retrieve the value of an attribute of the selected element and use it in the stylesheet. It can also be used on pseudo-elements, in which case the value of the attribute on the pseudo-element's originating element is returned.
601 azimuth CSS, CSS Property, Deprecated, NeedsUpdate, Reference
In combination with elevation, the azimuth CSS property enables different audio sources to be positioned spatially for aural presentation. This is important in that it provides a natural way to tell several voices apart, as each can be positioned to originate at a different location on the sound stage. Stereo output produce a lateral sound stage, while binaural headphones and multi-speaker setups allow for a fully three-dimensional stage.
602 backdrop-filter CSS, CSS Property, Experimental, Graphics, Layout, NeedsContent, Reference, SVG, SVG Filter, Web
The backdrop-filter CSS property lets you apply graphical effects such as blurring or color shifting to the area behind an element. Because it applies to everything behind the element, to see the effect you must make the element or its background at least partially transparent.
603 backface-visibility CSS, CSS Property, CSS Transforms, Experimental, Reference
The backface-visibility CSS property sets whether the back face of an element is visible when turned towards the user.
604 background CSS, CSS Background, CSS Property, Reference
The background shorthand CSS property sets all background style properties at once, such as color, image, origin and size, or repeat method.
605 background-attachment CSS, CSS Background, CSS Property, Reference
The background-attachment CSS property sets whether a background image's position is fixed within the viewport, or scrolls with its containing block.
606 background-blend-mode CSS, CSS Property, Compositing and Blending
The background-blend-mode CSS property sets how an element's background images should blend with each other and with the element's background color.
607 background-clip CSS, CSS Background, CSS Property, Reference
The background-clip CSS property sets whether an element's background extends underneath its border box, padding box, or content box.
608 background-color CSS, CSS Background, CSS Property, Graphics, HTML Colors, HTML Styles, Layout, Reference, Styles, Styling HTML, background-color
The background-color CSS property sets the background color of an element.
609 background-image CSS, CSS Background, CSS Property, Reference
The background-image CSS property sets one or more background images on an element.
610 background-origin CSS, CSS Background, CSS Property, Reference
The background-origin CSS property sets the background's origin: from the border start, inside the border, or inside the padding.
611 background-position CSS, CSS Background, CSS Property, Reference
The background-position CSS property sets the initial position for each background image. The position is relative to the position layer set by background-origin.
612 background-position-x CSS, CSS Background, CSS Property, Experimental, Reference
The background-position-x CSS property sets the initial horizontal position for each background image. The position is relative to the position layer set by background-origin.
613 background-position-y CSS, CSS Background, CSS Property, Experimental, Reference
The background-position-y CSS property sets the initial vertical position for each background image. The position is relative to the position layer set by background-origin.
614 background-repeat CSS, CSS Background, CSS Property, Reference
The background-repeat CSS property sets how background images are repeated. A background image can be repeated along the horizontal and vertical axes, or not repeated at all.
615 background-size CSS, CSS Background, CSS Property, Reference
The background-size CSS property sets the size of the element's background image. The image can be left to its natural size, stretched, or constrained to fit the available space.
616 block-size CSS, CSS Logical Property, CSS Property, Experimental, Reference
The block-size CSS property defines the horizontal or vertical size of an element's block, depending on its writing mode. It corresponds to either the width or the height property, depending on the value of writing-mode.
617 border CSS, CSS Borders, CSS Property, Layout, Reference
The border shorthand CSS property sets an element's border.
618 border-block CSS, CSS Logical Property, CSS Property, Experimental, Reference
The border-block CSS property is a shorthand property for setting the individual logical block border property values in a single place in the style sheet.
619 border-block-color CSS, CSS Logical Property, CSS Property, Experimental, Reference
The border-block-color CSS property defines the color of the logical block borders of an element, which maps to a physical border color depending on the element's writing mode, directionality, and text orientation. It corresponds to the border-top-color and border-bottom-color, or border-right-color and border-left-color property depending on the values defined for writing-mode, direction, and text-orientation.
620 border-block-end CSS, CSS Logical Property, CSS Property, Experimental, Reference, border-block, border-block-end-color, border-block-end-style, border-block-end-width
The border-block-end CSS property is a shorthand property for setting the individual logical block-end border property values in a single place in the style sheet.
621 border-block-end-color CSS, CSS Logical Property, CSS Property, Experimental, Reference, border-block, border-block-color, border-block-end, border-block-end-color
The border-block-end-color CSS property defines the color of the logical block-end border of an element, which maps to a physical border color depending on the element's writing mode, directionality, and text orientation. It corresponds to the border-top-color, border-right-color, border-bottom-color, or border-left-color property depending on the values defined for writing-mode, direction, and text-orientation.
622 border-block-end-style CSS, CSS Logical Property, CSS Property, Experimental, Reference, border-block, border-block-end, border-block-end-style, border-block-style
The border-block-end-style CSS property defines the style of the logical block-end border of an element, which maps to a physical border style depending on the element's writing mode, directionality, and text orientation. It corresponds to the border-top-style, border-right-style, border-bottom-style, or border-left-style property depending on the values defined for writing-mode, direction, and text-orientation.
623 border-block-end-width CSS, CSS Logical Property, CSS Property, Experimental, Reference, border-block, border-block-end, border-block-end-width, border-block-width
The border-block-end-width CSS property defines the width of the logical block-end border of an element, which maps to a physical border width depending on the element's writing mode, directionality, and text orientation. It corresponds to the border-top-width, border-right-width, border-bottom-width, or border-left-width property depending on the values defined for writing-mode, direction, and text-orientation.
624 border-block-start CSS, CSS Logical Property, CSS Property, Experimental, Reference, border-block, border-block-start, border-block-start-color, border-block-start-style, border-block-start-width
The border-block-start CSS property is a shorthand property for setting the individual logical block-start border property values in a single place in the style sheet.
625 border-block-start-color CSS, CSS Logical Property, CSS Property, Experimental, Reference, border-block, border-block-color, border-block-start, border-block-start-color
The border-block-start-color CSS property defines the color of the logical block-start border of an element, which maps to a physical border color depending on the element's writing mode, directionality, and text orientation. It corresponds to the border-top-color, border-right-color, border-bottom-color, or border-left-color property depending on the values defined for writing-mode, direction, and text-orientation.
626 border-block-start-style CSS, CSS Logical Property, CSS Property, Experimental, Reference, border-block, border-block-start, border-block-start-style, border-block-style
The border-block-start-style CSS property defines the style of the logical block start border of an element, which maps to a physical border style depending on the element's writing mode, directionality, and text orientation. It corresponds to the border-top-style, border-right-style, border-bottom-style, or border-left-style property depending on the values defined for writing-mode, direction, and text-orientation.
627 border-block-start-width CSS, CSS Logical Property, CSS Property, Experimental, Reference, border-block, border-block-start, border-block-start-width, border-block-width
The border-block-start-width CSS property defines the width of the logical block-start border of an element, which maps to a physical border width depending on the element's writing mode, directionality, and text orientation. It corresponds to the border-top-width, border-right-width, border-bottom-width, or border-left-width property depending on the values defined for writing-mode, direction, and text-orientation.
628 border-block-style CSS, CSS Logical Property, CSS Property, Experimental, Reference
The border-block-style CSS property defines the style of the logical block borders of an element, which maps to a physical border style depending on the element's writing mode, directionality, and text orientation. It corresponds to the border-top-style and border-bottom-style, or border-left-style and border-right-style properties depending on the values defined for writing-mode, direction, and text-orientation.
629 border-block-width CSS, CSS Logical Property, CSS Property, Experimental, Reference
The border-block-width CSS property defines the width of the logical block borders of an element, which maps to a physical border width depending on the element's writing mode, directionality, and text orientation. It corresponds to the border-top-width and border-bottom-width, or border-left-width, and border-right-width property depending on the values defined for writing-mode, direction, and text-orientation.
630 border-bottom CSS, CSS Borders, CSS Property, Reference
The border-bottom shorthand CSS property sets an element's bottom border.
631 border-bottom-color CSS, CSS Borders, CSS Property, Reference
The border-bottom-color CSS property sets the color of an element's bottom border.
632 border-bottom-left-radius CSS, CSS Borders, CSS Property, Reference
The border-bottom-left-radius CSS property rounds the bottom-left corner of an element.
633 border-bottom-right-radius CSS, CSS Borders, CSS Property, Reference
The border-bottom-right-radius CSS property rounds the bottom-right corner of an element.
634 border-bottom-style CSS, CSS Borders, CSS Property, Reference
The border-bottom-style CSS property sets the line style of an element's bottom border.
635 border-bottom-width CSS, CSS Borders, CSS Property, Reference
The border-bottom-width CSS property sets the width of the bottom border of an element.
636 border-collapse CSS, CSS Borders, CSS Property, CSS Tables, Reference
The border-collapse CSS property sets whether cells inside a <table> have shared or separate borders.
637 border-color CSS, CSS Borders, CSS Property, CSS Styles, HTML Colors, Reference, Styling HTML, border-color, borders, colors
The border-color shorthand CSS property sets the color of an element's border.
638 border-end-end-radius CSS, CSS Logical Property, CSS Property, Experimental, Reference, border-end-end-radius, writing modes
The border-end-end-radius CSS property defines a logical border radius on an element, which maps to a physical border radius that depends on on the element's writing-mode, direction, and text-orientation.
639 border-end-start-radius CSS, CSS Logical Property, CSS Property, Experimental, Reference, border-end-start-radius, writing modes
The border-end-start-radius CSS property defines a logical border radius on an element, which maps to a physical border radius depending on the element's writing-mode, direction, and text-orientation.
640 border-image CSS, CSS Borders, CSS Property, Reference
The border-image CSS property draws an image around a given element. It replaces the element's regular border.
641 border-image-outset CSS, CSS Borders, CSS Property, Reference
The border-image-outset CSS property sets the distance by which an element's border image is set out from its border box.
642 border-image-repeat CSS, CSS Borders, CSS Property, Reference
The border-image-repeat CSS property defines how the edge regions of a source image are adjusted to fit the dimensions of an element's border image.
643 border-image-slice CSS, CSS Borders, CSS Property, NeedsExample, Reference
The border-image-slice CSS property divides the image specified by border-image-source into regions. These regions form the components of an element's border image.
644 border-image-source CSS, CSS Borders, CSS Property, Reference
The border-image-source CSS property sets the source image used to create an element's border image.
645 border-image-width CSS, CSS Borders, CSS Property, Reference
The border-image-width CSS property sets the width of an element's border image.
646 border-inline CSS, CSS Logical Property, CSS Property, Experimental, Reference
The border-inline CSS property is a shorthand property for setting the individual logical inline border property values in a single place in the style sheet.
647 border-inline-color CSS, CSS Logical Property, CSS Property, Experimental, Reference
The border-inline-color CSS property defines the color of the logical inline borders of an element, which maps to a physical border color depending on the element's writing mode, directionality, and text orientation. It corresponds to the border-top-color and border-bottom-color, or border-right-color and border-left-color property depending on the values defined for writing-mode, direction, and text-orientation.
648 border-inline-end CSS, CSS Logical Property, CSS Property, Experimental, Reference, border-inline, border-inline-end, border-inline-end-color, border-inline-end-style, border-inline-end-width
The border-inline-end CSS property is a shorthand property for setting the individual logical inline-end border property values in a single place in the style sheet.
649 border-inline-end-color CSS, CSS Logical Property, CSS Property, Experimental, Reference, border-inline, border-inline-color, border-inline-end, border-inline-end-color
The border-inline-end-color CSS property defines the color of the logical inline-end border of an element, which maps to a physical border color depending on the element's writing mode, directionality, and text orientation. It corresponds to the border-top-color, border-right-color, border-bottom-color, or border-left-color property depending on the values defined for writing-mode, direction, and text-orientation.
650 border-inline-end-style CSS, CSS Logical Property, CSS Property, Experimental, Reference, border-inline, border-inline-end, border-inline-end-style, border-inline-style
The border-inline-end-style CSS property defines the style of the logical inline end border of an element, which maps to a physical border style depending on the element's writing mode, directionality, and text orientation. It corresponds to the border-top-style, border-right-style, border-bottom-style, or border-left-style property depending on the values defined for writing-mode, direction, and text-orientation.
651 border-inline-end-width CSS, CSS Logical Property, CSS Property, Experimental, Reference, border-inline, border-inline-end, border-inline-end-width, border-inline-width
The border-inline-end-width CSS property defines the width of the logical inline-end border of an element, which maps to a physical border width depending on the element's writing mode, directionality, and text orientation. It corresponds to the border-top-width, border-right-width, border-bottom-width, or border-left-width property depending on the values defined for writing-mode, direction, and text-orientation.
652 border-inline-start CSS, CSS Logical Property, CSS Property, Experimental, Reference, border-inline, border-inline-start, border-inline-start-color, border-inline-start-style, border-inline-start-width
The border-inline-start CSS property is a shorthand property for setting the individual logical inline-start border property values in a single place in the style sheet.
653 border-inline-start-color CSS, CSS Logical Property, CSS Property, Experimental, Reference, border-inline, border-inline-color, border-inline-start, border-inline-start-color
The border-inline-start-color CSS property defines the color of the logical inline start border of an element, which maps to a physical border color depending on the element's writing mode, directionality, and text orientation. It corresponds to the border-top-color, border-right-color, border-bottom-color, or border-left-color property depending on the values defined for writing-mode, direction, and text-orientation.
654 border-inline-start-style CSS, CSS Logical Property, CSS Property, Experimental, Reference, border-inline, border-inline-start, border-inline-start-style, border-inline-style
The border-inline-start-style CSS property defines the style of the logical inline start border of an element, which maps to a physical border style depending on the element's writing mode, directionality, and text orientation. It corresponds to the border-top-style, border-right-style, border-bottom-style, or border-left-style property depending on the values defined for writing-mode, direction, and text-orientation.
655 border-inline-start-width CSS, CSS Logical Property, CSS Property, Experimental, Reference, border-inline, border-inline-start, border-inline-start-width, border-inline-width
The border-inline-start-width CSS property defines the width of the logical inline-start border of an element, which maps to a physical border width depending on the element's writing mode, directionality, and text orientation. It corresponds to the border-top-width, border-right-width, border-bottom-width, or border-left-width property depending on the values defined for writing-mode, direction, and text-orientation.
656 border-inline-style CSS, CSS Logical Property, CSS Property, Experimental, Reference
The border-inline-style CSS property defines the style of the logical inline borders of an element, which maps to a physical border style depending on the element's writing mode, directionality, and text orientation. It corresponds to the border-top-style and border-bottom-style, or border-left-style and border-right-style properties depending on the values defined for writing-mode, direction, and text-orientation.
657 border-inline-width CSS, CSS Logical Property, CSS Property, Experimental, Reference
The border-inline-width CSS property defines the width of the logical inline borders of an element, which maps to a physical border width depending on the element's writing mode, directionality, and text orientation. It corresponds to the border-top-width and border-bottom-width, or border-left-width, and border-right-width property depending on the values defined for writing-mode, direction, and text-orientation.
658 border-left CSS, CSS Borders, CSS Property, Reference
The border-left shorthand CSS property set an element's left border.
659 border-left-color CSS, CSS Borders, CSS Property, Reference
The border-left-color CSS property sets the color of an element's left border.
660 border-left-style CSS, CSS Borders, CSS Property, Reference
The border-left-style CSS property sets the line style of an element's left border.
661 border-left-width CSS, CSS Borders, CSS Property, Reference
The border-left-width CSS property sets the width of the left border of an element.
662 border-radius CSS, CSS Borders, CSS Property, Reference
The border-radius CSS property rounds the corners of an element's outer border edge. You can set a single radius to make circular corners, or two radii to make elliptical corners.
663 border-right CSS, CSS Borders, CSS Property, Reference
The border-right shorthand CSS property sets an element's right border.
664 border-right-color CSS, CSS Borders, CSS Property, Reference
The border-right-color CSS property sets the color of an element's right border. It can also be set with the shorthand CSS properties border-color or border-right.
665 border-right-style CSS, CSS Borders, CSS Property, Reference
The border-right-style CSS property sets the line style of an element's right border.
666 border-right-width CSS, CSS Borders, CSS Property, Reference
The border-right-width CSS property sets the width of the right border of an element.
667 border-spacing CSS, CSS Property, CSS Tables, Reference
The border-spacing CSS property sets the distance between the borders of adjacent <table> cells. This property applies only when border-collapse is separate.
668 border-start-end-radius CSS, CSS Logical Property, CSS Property, Experimental, Reference, border-start-end-radius, writing modes
The border-start-end-radius CSS property defines a logical border radius on an element, which maps to a physical border radius depending on the element's writing-mode, direction, and text-orientation.
669 border-start-start-radius CSS, CSS Logical Property, CSS Property, Experimental, Reference, border-start-start-radius, writing modes
The border-start-start-radius CSS property defines a logical border radius on an element, which maps to a physical border radius that depends on the element's writing-mode, direction, and text-orientation.
670 border-style CSS, CSS Borders, CSS Property, Reference
The border-style shorthand CSS property sets the line style for all four sides of an element's border.
671 border-top CSS, CSS Borders, CSS Property, Reference
The border-top shorthand CSS property set an element's top border.
672 border-top-color CSS, CSS Borders, CSS Property, Reference
The border-top-color CSS property sets the color of an element's top border.
673 border-top-left-radius CSS, CSS Borders, CSS Property, Reference
The border-top-left-radius CSS property rounds the top-left corner of an element.
674 border-top-right-radius CSS, CSS Borders, CSS Property, Reference
The border-top-right-radius CSS property rounds the top-right corner of an element.
675 border-top-style CSS, CSS Borders, CSS Property, Reference
The border-top-style CSS property sets the line style of an element's top border.
676 border-top-width CSS, CSS Borders, CSS Property, Reference
The border-top-width CSS property sets the width of the top border of an element.
677 border-width CSS, CSS Borders, CSS Property, Reference
The border-width shorthand CSS property sets the width of an element's border.
678 bottom CSS, CSS Positioning, CSS Property, Reference
The bottom CSS property participates in setting the vertical position of a positioned element. It has no effect on non-positioned elements.
679 box-align CSS, CSS Property, NeedsUpdate, Non-standard, Reference
The box-align CSS property specifies how an element aligns its contents across its layout in a perpendicular direction. The effect of the property is only visible if there is extra space in the box.
680 box-decoration-break CSS, CSS Fragmentation, CSS Property, Experimental, Reference
The box-decoration-break CSS property specifies how an element's fragments should be rendered when broken across multiple lines, columns, or pages.
681 box-direction CSS, Non-standard, Reference
The box-direction CSS property specifies whether a box lays out its contents normally (from the top or left edge), or in reverse (from the bottom or right edge).
682 box-flex CSS, CSS Property, Non-standard, Reference, box-flex
The -moz-box-flex and -webkit-box-flex CSS properties specify how a -moz-box or -webkit-box grows to fill the box that contains it, in the direction of the containing box's layout.
683 box-flex-group CSS, CSS Property, Non-standard, Reference
The box-flex-group CSS property assigns the flexbox's child elements to a flex group.
684 box-lines CSS, CSS Property, Non-standard, Reference
The box-lines CSS property determines whether the box may have a single or multiple lines (rows for horizontally oriented boxes, columns for vertically oriented boxes).
685 box-ordinal-group CSS, CSS Property, Non-standard, Reference
The box-ordinal-group CSS property assigns the flexbox's child elements to an ordinal group.
686 box-orient CSS, Non-standard, Reference
The box-orient CSS property sets whether an element lays out its contents horizontally or vertically.
687 box-pack CSS, CSS Property, Non-standard, Reference, box-pack
The -moz-box-pack and -webkit-box-pack CSS properties specify how a -moz-box or -webkit-box packs its contents in the direction of its layout. The effect of this is only visible if there is extra space in the box.
688 box-shadow CSS, CSS Backgrounds and Borders, CSS Property, CSS Styles, HTML Colors, Reference, Shadows, Styles, Styling HTML, box-shadow
The box-shadow CSS property adds shadow effects around an element's frame. You can set multiple effects separated by commas.
689 box-sizing Boxes, CSS, CSS Box Model, CSS Property, Reference, border-box, box model, box-sizing, content-box, height, size, width
The box-sizing CSS property sets how the total width and height of an element is calculated.
690 break-after CSS, CSS Fragmentation, CSS Multi-column Layout, CSS Property, NeedsExample, Reference
The break-after CSS property sets how page, column, or region breaks should behave after a generated box. If there is no generated box, the property is ignored.
691 break-before CSS, CSS Fragmentation, CSS Multi-column Layout, CSS Property, NeedsExample, Reference
The break-before CSS property sets how page, column, or region breaks should behave before a generated box. If there is no generated box, the property is ignored.
692 break-inside CSS, CSS Fragmentation, CSS Multi-column Layout, CSS Property, NeedsExample, Reference
The break-inside CSS property sets how page, column, or region breaks should behave inside a generated box. If there is no generated box, the property is ignored.
693 calc() CSS, CSS Function, Calculate, Compute, Function, Layout, Reference, Web, calc
The calc() CSS function lets you perform calculations when specifying CSS property values. It can be used anywhere a <length>, <frequency>, <angle>, <time>, <percentage>, <number>, or <integer> is allowed.
694 caption-side CSS, CSS Property, CSS Tables, Reference
The caption-side CSS property puts the content of a table's <caption> on the specified side. The values are relative to the writing-mode of the table.
695 caret-color CSS, CSS Property, CSS User Interace, Editing, HTML Colors, Input, Reference, Styling HTML, Text Editing, caret, caret-color, contenteditable
The caret-color CSS property sets the color of the insertion caret, the visible marker where the next character typed will be inserted.
696 clamp() CSS, CSS Function, Calculate, Compute, Function, Layout, Reference, Web, clamp
The clamp() CSS function clamps a value between an upper and lower bound. clamp() enables selecting a middle value within a range of values between a defined minimum and maximum. It takes three parameters: a minimum value, a preferred value, and a maximum allowed value. The clamp() function can be used anywhere a <length>, <frequency>, <angle>, <time>, <percentage>, <number>, or <integer> is allowed.
697 clear CSS, CSS Positioning, CSS Property, Reference
The clear CSS property sets whether an element must be moved below (cleared) floating elements that precede it. The clear property applies to floating and non-floating elements.
698 clip CSS, CSS Masking, CSS Property, Reference
The clip CSS property defines what portion of an element is visible. The clip property applies only to absolutely positioned elements, that is elements with position:absolute or position:fixed.
699 clip-path CSS, CSS Masking, CSS Property, Experimental, Reference, Web
The clip-path CSS property creates a clipping region that sets what part of an element should be shown. Parts that are inside the region are shown, while those outside are hidden.
700 color CSS, CSS Colors, CSS Property, CSS Text, HTML Colors, HTML Styles, Layout, Reference, Styling HTML, Styling text, Web, color
The color CSS property sets the foreground color value of an element's text and text decorations, and sets the currentcolor value.
701 color-adjust Adjusting Colors, CSS, CSS Colors, CSS Property, HTML Colors, HTML Styles, Layout, Non-standard, Reference, Styling HTML, Styling text, Web, color-adjust
The color-adjust CSS property sets what, if anything, the user agent may do to optimize the appearance of the element on the output device.
702 column-count CSS, CSS Multi-column Layout, CSS Property, Reference
The column-count CSS property breaks an element's content into the specified number of columns.
703 column-fill CSS, CSS Multi-column Layout, CSS Property, Reference
The column-fill CSS property controls how an element's contents are balanced when broken into columns.
704 column-gap (grid-column-gap) CSS, CSS Flexible Boxes, CSS Grid, CSS Multi-column Layout, CSS Property, Reference, column-gap
The column-gap CSS property sets the size of the gap (gutter) between an element's columns.
705 column-rule CSS, CSS Multi-column Layout, CSS Property, Reference
The column-rule shorthand CSS property sets the width, style, and color of the line drawn between columns in a multi-column layout.
706 column-rule-color CSS, CSS Multi-column Layout, CSS Property, HTML Colors, Reference, Styles, Styling HTML, column-rule-color, columns
The column-rule-color CSS property sets the color of the line drawn between columns in a multi-column layout.
707 column-rule-style CSS, CSS Multi-column Layout, CSS Property, Reference
The column-rule-style CSS property sets the style of the line drawn between columns in a multi-column layout.
708 column-rule-width CSS, CSS Multi-column Layout, CSS Property, Reference
The column-rule-width CSS property sets the width of the line drawn between columns in a multi-column layout.
709 column-span CSS, CSS Multi-column Layout, CSS Property, Reference
The column-span CSS property makes it possible for an element to span across all columns when its value is set to all.
710 column-width CSS, CSS Multi-column Layout, CSS Property, Reference
The column-width CSS property sets the ideal column width in a multi-column layout.
711 columns CSS, CSS Multi-column Layout, CSS Property, Reference
The columns CSS property sets the column width and column count of an element.
712 conic-gradient() CSS, CSS Function, CSS Images, Graphics, Layout, Reference, Web, gradient
The conic-gradient() CSS function creates an image consisting of a gradient with color transitions rotated around a center point (rather than radiating from the center). Example conic gradients include pie charts and color wheels. The result of the conic-gradient() function is an object of the <gradient> data type, which is a special kind of <image>.
713 contain CSS, CSS Containment, CSS Property, Layout, NeedsExample, Paint, Reference, Style, Web
The contain CSS property allows an author to indicate that an element and its contents are, as much as possible, independent of the rest of the document tree. This allows the browser to recalculate layout, style, paint, size, or any combination of them for a limited area of the DOM and not the entire page, leading to obvious performance benefits.
714 content CSS, CSS Counter, CSS Property, Generated Content, Reference
The content CSS property replaces an element with a generated value. Objects inserted using the content property are anonymous replaced elements.
715 counter() CSS, CSS Counter, CSS Function, Reference
The counter() CSS function returns a string representing the current value of the named counter, if there is one. It is generally used with pseudo-elements, but can be used, theoretically, anywhere a <string> value is supported.
716 counter-increment CSS, CSS Counter, CSS Lists, CSS Property, Reference
The counter-increment CSS property increases or decreases the value of a CSS counter by a given value.
717 counter-reset CSS, CSS Counter, CSS Lists, CSS Property
The counter-reset CSS property resets a CSS counter to a given value.
718 counter-set CSS, CSS Counter, CSS Lists, CSS Property
The counter-set CSS property sets a CSS counter to a given value. It manipulates the value of existing counters, and will only create new counters if there isn't already a counter of the given name on the element.
719 counters() CSS, CSS Counter, CSS Function, Reference
The counters() CSS function enables nested counters, returning a concatenated string representing the current values of the named counters, if there are any. The counters() function has two forms: 'counters(name, string)' or 'counters(name, string, style)'. It is generally used with pseudo-elements, but can be used, theoretically, anywhere a <string> value is supported. The generated text is the value of all counters with the given name, from outermost to innermost, separated by the specified string. The counters are rendered in the style indicated, defaulting to decimal if no style is specified.
720 cross-fade() CSS, CSS Function, CSS-4 Images, Experimental, Reference, Web
The CSS cross-fade() function can be used to blend two or more images at a defined transparency.
721 cursor Arrow, CSS, CSS Property, Cursor, Custom Cursor, Reference, UI, mouse, pointer
The cursor CSS property sets the type of cursor, if any, to show when the mouse pointer is over an element.
722 direction BiDi, CSS, CSS Property, Reference
The direction CSS property sets the direction of text, table columns, and horizontal overflow.
723 display CSS, CSS Display, CSS Property, Reference, display
The display CSS property sets whether an element is treated as a block or inline element and the layout used for its children, such as flow layout, grid or flex.
724 Adapting to the new two-value syntax of display
Firefox 70 implemented the two-value syntax for the display property, which is part of the CSS Display Module Level 3. This guide explains the change to the syntax, including the reasoning behind this change. It also details the in-built backwards compatibility for the display property.
725 element() CSS, CSS Function, CSS4-images, Layout, Reference, Web
The element() CSS function defines an <image> value generated from an arbitrary HTML element. This image is live, meaning that if the HTML element is changed, the CSS properties using the resulting value are automatically updated.
726 empty-cells CSS, CSS Property, CSS Tables, Reference
The empty-cells CSS property sets whether borders and backgrounds appear around <table> cells that have no visible content.
727 env() CSS, CSS Function, CSS Variables, Draft, Reference, Variables, env, env()
The env() CSS function can be used to insert the value of a user agent-defined environment variable into your CSS, in a similar fashion to the var() function and custom properties. The difference is that, as well as being user-agent defined rather than user-defined, environment variables are globally scoped to a document, whereas custom properties are scoped to the element(s) on which they are declared.
728 filter CSS, CSS Property, Reference, SVG, SVG Filter
The filter CSS property applies graphical effects like blur or color shift to an element. Filters are commonly used to adjust the rendering of images, backgrounds, and borders.
729 fit-content() CSS, CSS Function, CSS Grid, Experimental, Layout, Reference, Web
The fit-content() CSS function clamps a given size to an available size according to the formula min(maximum size, max(minimum size, argument)).
730 flex CSS, CSS Flexible Boxes, CSS Property, Reference
The flex CSS property sets how a flex item will grow or shrink to fit the space available in its flex container.
731 flex-basis CSS, CSS Flexible Boxes, CSS Property, Reference
The flex-basis CSS property sets the initial main size of a flex item. It sets the size of the content box unless otherwise set with box-sizing.
732 flex-direction CSS, CSS Flexible Boxes, CSS Property, Reference
The flex-direction CSS property sets how flex items are placed in the flex container defining the main axis and the direction (normal or reversed).
733 flex-flow CSS, CSS Flexible Boxes, CSS Property, Reference
The flex-flow CSS property is a shorthand property for flex-direction and flex-wrap properties.
734 flex-grow CSS, CSS Flexible Boxes, CSS Property, NeedsContent, Reference
The flex-grow CSS property sets the flex grow factor of a flex item main size. It specifies how much of the remaining space in the flex container should be assigned to the item (the flex grow factor).
735 flex-shrink CSS, CSS Flexible Boxes, CSS Property, NeedsContent, Reference
The flex-shrink CSS property sets the flex shrink factor of a flex item. If the size of all flex items is larger than the flex container, items shrink to fit according to flex-shrink.
736 flex-wrap CSS, CSS Flexible Boxes, CSS Property, Reference
The flex-wrap CSS property sets whether flex items are forced onto one line or can wrap onto multiple lines. If wrapping is allowed, it sets the direction that lines are stacked.
737 float CSS, CSS Positioning, CSS Property, Reference
The float CSS property places an element on the left or right side of its container, allowing text and inline elements to wrap around it.
738 font CSS, CSS Fonts, CSS Property, Reference
The font CSS property is a shorthand for font-style, font-variant, font-weight, font-stretch, font-size, line-height, and font-family. Alternatively, it sets an element's font to a system font.
739 font-family CSS, CSS Fonts, CSS Property, Reference
The font-family CSS property specifies a prioritized list of one or more font family names and/or generic family names for the selected element.
740 font-feature-settings CSS, CSS Fonts, CSS Property, Reference
The font-feature-settings CSS property controls advanced typographic features in OpenType fonts.
741 font-kerning CSS, CSS Fonts, CSS Property, Reference
The font-kerning CSS property sets the use of the kerning information stored in a font.
742 font-language-override CSS, CSS Fonts, CSS Property, Reference
The font-language-override CSS property controls the use of language-specific glyphs in a typeface.
743 font-optical-sizing CSS, CSS Fonts, CSS Property, NeedsExample, Reference
The font-optical-sizing CSS property sets whether text rendering is optimized for viewing at different sizes.
744 font-size CSS, CSS Fonts, CSS Property, Reference
The font-size CSS property sets the size of the font.
745 font-size-adjust CSS, CSS Fonts, CSS Property, Reference
The font-size-adjust CSS property sets how the font size should be chosen based on the height of lowercase rather than capital letters.
746 font-smooth CSS, CSS Property, Non-standard, Reference
The font-smooth CSS property controls the application of anti-aliasing when fonts are rendered.
747 font-stretch CSS, CSS Fonts, CSS Property, Reference
The font-stretch CSS property selects a normal, condensed, or expanded face from a font.
748 font-style CSS, CSS Fonts, CSS Property, Reference, Web, font
The font-style CSS property sets whether a font should be styled with a normal, italic, or oblique face from its font-family.
749 font-synthesis CSS, CSS Fonts, CSS Property, Reference
The font-synthesis CSS property controls which missing typefaces, bold or italic, may be synthesized by the browser.
750 font-variant CSS, CSS Fonts, CSS Property, Reference
The font-variant CSS property is a shorthand for the longhand properties font-variant-caps, font-variant-numeric, font-variant-alternates, font-variant-ligatures, and font-variant-east-asian. You can also set the CSS Level 2 (Revision 1) values of font-variant, (that is, normal or small-caps), by using the font shorthand.
751 font-variant-alternates CSS, CSS Fonts, CSS Property, Reference
The font-variant-alternates CSS property controls the usage of alternate glyphs. These alternate glyphs may be referenced by alternative names defined in @font-feature-values.
752 font-variant-caps CSS, CSS Fonts, CSS Property, Reference
The font-variant-caps CSS property controls the use of alternate glyphs for capital letters.
753 font-variant-east-asian CSS, CSS Fonts, CSS Property, NeedsLiveSample, Reference
The font-variant-east-asian CSS property controls the use of alternate glyphs for East Asian scripts, like Japanese and Chinese.
754 font-variant-ligatures CSS, CSS Fonts, CSS Property, Reference
The font-variant-ligatures CSS property controls which ligatures and contextual forms are used in textual content of the elements it applies to. This leads to more harmonized forms in the resulting text.
755 font-variant-numeric CSS, CSS Fonts, CSS Property, Reference
The font-variant-numeric CSS property controls the usage of alternate glyphs for numbers, fractions, and ordinal markers.
756 font-variant-position CSS, CSS Fonts, CSS Property, Reference
The font-variant-position CSS property controls the use of alternate, smaller glyphs that are positioned as superscript or subscript.
757 font-variation-settings CSS, CSS Fonts, CSS Property, Reference
The font-variation-settings CSS property provides low-level control over variable font characteristics, by specifying the four letter axis names of the characteristics you want to vary, along with their values.
758 font-weight CSS, CSS Fonts, CSS Property, Reference
The font-weight CSS property sets the weight (or boldness) of the font. The weights available depend on the font-family you are using.
759 gap (grid-gap) CSS, CSS Flexible Boxes, CSS Grid, CSS Multi-column Layout, CSS Property, Reference, gap
The gap CSS property sets the gaps (gutters) between rows and columns. It is a shorthand for row-gap and column-gap.
760 grid CSS, CSS Grid, CSS Property, Reference
The grid CSS property is a shorthand property that sets all of the explicit grid properties (grid-template-rows, grid-template-columns, and grid-template-areas), and all the implicit grid properties (grid-auto-rows, grid-auto-columns, and grid-auto-flow), in a single declaration.
761 grid-area CSS, CSS Grid, CSS Property, Reference
The grid-area CSS property is a shorthand property for grid-row-start, grid-column-start, grid-row-end and grid-column-end, specifying a grid item’s size and location within the grid by contributing a line, a span, or nothing (automatic) to its grid placement, thereby specifying the edges of its grid area.
762 grid-auto-columns CSS, CSS Grid, CSS Property, Experimental, Reference
The grid-auto-columns CSS property specifies the size of an implicitly-created grid column track or pattern of tracks.
763 grid-auto-flow CSS, CSS Grid, CSS Property, Reference
The grid-auto-flow CSS property controls how the auto-placement algorithm works, specifying exactly how auto-placed items get flowed into the grid.
764 grid-auto-rows CSS, CSS Grid, CSS Property, Reference
The grid-auto-rows CSS property specifies the size of an implicitly-created grid row track or pattern of tracks.
765 grid-column CSS, CSS Grid, CSS Property, Reference
The grid-column CSS property is a shorthand property for grid-column-start and grid-column-end specifying a grid item's size and location within the grid column by contributing a line, a span, or nothing (automatic) to its grid placement, thereby specifying the inline-start and inline-end edge of its grid area.
766 grid-column-end CSS, CSS Grid, CSS Property, Reference
The grid-column-end CSS property specifies a grid item’s end position within the grid column by contributing a line, a span, or nothing (automatic) to its grid placement, thereby specifying the block-end edge of its grid area.
767 grid-column-start CSS, CSS Grid, CSS Property, Reference
The grid-column-start CSS property specifies a grid item’s start position within the grid column by contributing a line, a span, or nothing (automatic) to its grid placement. This start position defines the block-start edge of the grid area.
768 grid-row CSS, CSS Grid, CSS Property, Reference
The grid-row CSS property is a shorthand property for grid-row-start and grid-row-end specifying a grid item’s size and location within the grid row by contributing a line, a span, or nothing (automatic) to its grid placement, thereby specifying the inline-start and inline-end edge of its grid area.
769 grid-row-end CSS, CSS Grid, CSS Property, Reference
The grid-row-end CSS property specifies a grid item’s end position within the grid row by contributing a line, a span, or nothing (automatic) to its grid placement, thereby specifying the inline-end edge of its grid area.
770 grid-row-start CSS, CSS Grid, CSS Property, Reference
The grid-row-start CSS property specifies a grid item’s start position within the grid row by contributing a line, a span, or nothing (automatic) to its grid placement, thereby specifying the inline-start edge of its grid area.
771 grid-template CSS, CSS Grid, CSS Property, Reference
The grid-template CSS property is a shorthand property for defining grid columns, rows, and areas.
772 grid-template-areas CSS, CSS Grid, CSS Property, Reference
The grid-template-areas CSS property specifies named grid areas.
773 grid-template-columns CSS, CSS Grid, CSS Property, Reference
The grid-template-columns CSS property defines the line names and track sizing functions of the grid columns.
774 grid-template-rows CSS, CSS Grid, CSS Property, Reference
The grid-template-rows CSS property defines the line names and track sizing functions of the grid rows.
775 hanging-punctuation CSS, CSS Property, CSS Text, Experimental, Reference
The hanging-punctuation CSS property specifies whether a punctuation mark should hang at the start or end of a line of text.
776 height CSS, CSS Property, Reference
The height CSS property specifies the height of an element. By default, the property defines the height of the content area. If box-sizing is set to border-box, however, it instead determines the height of the border area.
777 hyphens CSS, CSS Property, CSS Text, Reference
The hyphens CSS property specifies how words should be hyphenated when text wraps across multiple lines.
778 ident CSS, CSS Data Type, Draft, Layout, Reference, Web, ident
The <ident> CSS data type denotes an arbitrary string used as an identifier.
779 image() CSS, CSS Function, CSS Images, Reference, Web
The image() CSS function defines an <image> in a similar fashion to the <url> function, but with added functionality including specifying the image's directionality, specifying fallback images for when the preferred image is not supported, displaying just a part of that image defined by a media fragment, and specifying a solid color as a fallback in case none of the specified images are able to be rendered.
780 image-orientation CSS, CSS Images, CSS Property, EXIF, Experimental, Image Correction, Image Orientation, Orientation, Reference, image-orientation
The image-orientation CSS property specifies a layout-independent correction to the orientation of an image.
781 image-rendering CSS, CSS Images, CSS Property, Reference, image-rendering
The image-rendering CSS property sets an image scaling algorithm. The property applies to an element itself, to any images set in its other properties, and to its descendants.
782 image-set() CSS, CSS Function, CSS-4 Images, Reference, Web
The image-set() CSS function notation is a method of letting the browser pick the most appropriate CSS image from a given set, primarily for high pixel density screens.
783 ime-mode CSS, CSS Property, Deprecated
The ime-mode CSS property controls the state of the input method editor (IME) for text fields. This property is obsolete.
784 inherit CSS, CSS Cascade, CSS Value, Cascade, Inheritance, Layout, Reference, Style, inherit
The inherit CSS keyword causes the element for which it is specified to take the computed value of the property from its parent element.
785 initial CSS, CSS Cascade, CSS Value, Default state, Initial state, Layout, Reference, initial
The initial CSS keyword applies the initial (or default) value of a property to an element. This initial value is set by the browser. It can be applied to any CSS property.
786 initial-letter CSS, CSS Inline, CSS Property, Experimental, Graphics, Layout, Reference, Web
The initial-letter CSS property sets styling for dropped, raised, and sunken initial letters.
787 initial-letter-align Align, CSS, CSS Inline, CSS Property, Experimental, Graphics, Layout, NeedsL, Reference, Web
The initial-letter-align CSS property specifies the alignment of initial letters within a paragraph.
788 inline-size CSS, CSS Logical Property, CSS Property, Reference
The inline-size CSS property defines the horizontal or vertical size of an element's block, depending on its writing mode. It corresponds to either the width or the height property, depending on the value of writing-mode.
789 inset CSS, CSS Logical Property, CSS Property, Experimental, Property, Reference
The inset CSS property, though part of the logical specification, doesn't define logical block or inline offsets, and instead defines physical offsets, regardless of the element's writing mode, directionality, and text orientation. It has the same multi-value syntax of the margin shorthand. It is a shorthand that corresponds to the top, right, bottom, and/or left properties.
790 inset-block CSS, CSS Logical Property, CSS Property, Experimental, Reference
The inset-block CSS property defines the logical block start and end offsets of an element, which maps to physical offsets depending on the element's writing mode, directionality, and text orientation. It corresponds to the top and bottom, or right and left properties depending on the values defined for writing-mode, direction, and text-orientation.
791 inset-block-end CSS, CSS Logical Property, CSS Property, Experimental, Reference
The inset-block-end CSS property defines the logical block end offset of an element, which maps to a physical inset depending on the element's writing mode, directionality, and text orientation.
792 inset-block-start CSS, CSS Logical Property, CSS Property, Experimental, Reference
The inset-block-start CSS property defines the logical block start offset of an element, which maps to a physical inset depending on the element's writing mode, directionality, and text orientation.
793 inset-inline CSS, CSS Logical Property, CSS Property, Experimental, Reference
The inset-inline CSS property defines the logical start and end offsets of an element in the inline direction, which maps to physical offsets depending on the element's writing mode, directionality, and text orientation. It corresponds to the top and bottom, or right and left properties depending on the values defined for writing-mode, direction, and text-orientation.
794 inset-inline-end CSS, CSS Logical Property, CSS Property, Experimental, NeedsContent, Reference
The inset-inline-end CSS property defines the logical inline end inset of an element, which maps to a physical inset depending on the element's writing mode, directionality, and text orientation.
795 inset-inline-start CSS, CSS Logical Property, CSS Property, Experimental, Reference
The inset-inline-start CSS property defines the logical inline start inset of an element, which maps to a physical offset depending on the element's writing mode, directionality, and text orientation.
796 isolation CSS, CSS Property, Compositing and Blending
The isolation CSS property determines whether an element must create a new stacking context.
797 justify-content CSS, CSS Box Alignment, CSS Property, Reference
The CSS justify-content property defines how the browser distributes space between and around content items along the main-axis of a flex container, and the inline axis of a grid container.
798 justify-items CSS, CSS Box Alignment, CSS Property, Reference
The CSS justify-items property defines the default justify-self for all items of the box, giving them all a default way of justifying each box along the appropriate axis.
799 justify-self CSS, CSS Box Alignment, CSS Property, Reference
The CSS justify-self property sets the way a box is justified inside its alignment container along the appropriate axis.
800 left CSS, CSS Positioning, CSS Property, Reference
The left CSS property participates in specifying the horizontal position of a positioned element. It has no effect on non-positioned elements.
801 letter-spacing CSS, CSS Property, CSS Text, Reference, SVG
The letter-spacing CSS property sets the spacing behavior between text characters.
802 line-break CSS, CSS Property, CSS Text, NeedsExample, Reference
The line-break CSS property sets how to break lines of Chinese, Japanese, or Korean (CJK) text when working with punctuation and symbols.
803 line-height CSS, CSS Fonts, CSS Property, Reference
The line-height CSS property sets the height of a line box. It's commonly used to set the distance between lines of text.
804 line-height-step CSS, CSS Fonts, CSS Property, Reference
The line-height-step CSS property sets the step unit for line box heights. When the property is set, line box heights are rounded up to the closest multiple of the unit.
805 linear-gradient() CSS, CSS Function, CSS Images, Graphics, Layout, Reference, Web, gradient
The linear-gradient() CSS function creates an image consisting of a progressive transition between two or more colors along a straight line. Its result is an object of the <gradient> data type, which is a special kind of <image>.
806 list-style CSS, CSS Lists, CSS Property, Reference
The list-style CSS property is a shorthand to set list style properties list-style-type, list-style-image, and list-style-position.
807 list-style-image CSS, CSS Lists, CSS Property, Reference
The list-style-image CSS property sets an image to be used as the list item marker.
808 list-style-position CSS, CSS Lists, CSS Property, Reference
The list-style-position CSS property sets the position of the ::marker relative to a list item.
809 list-style-type CSS, CSS Lists, CSS Property, Reference
The list-style-type CSS property sets the marker (such as a disc, character, or custom counter style) of a list item element.
810 margin-block CSS, CSS Logical Property, CSS Property, Experimental, Reference, margin-block
The margin-block CSS property defines the logical block start and end margins of an element, which maps to physical margins depending on the element's writing mode, directionality, and text orientation.
811 margin-block-end CSS, CSS Logical Property, CSS Property, Experimental, NeedsContent, Reference, margin-block, margin-block-end
The margin-block-end CSS property defines the logical block end margin of an element, which maps to a physical margin depending on the element's writing mode, directionality, and text orientation.
812 margin-block-start CSS, CSS Logical Property, CSS Property, Experimental, NeedsContent, Reference, margin-block, margin-block-start
The margin-block-start CSS property defines the logical block start margin of an element, which maps to a physical margin depending on the element's writing mode, directionality, and text orientation.
813 margin-bottom CSS, CSS Property, Reference
The margin-bottom CSS property sets the margin area on the bottom of an element. A positive value places it farther from its neighbors, while a negative value places it closer.
814 margin-inline CSS, CSS Logical Property, CSS Property, Experimental, Reference, margin-inline
The margin-inline CSS property defines the logical inline start and end margins of an element, which maps to physical margins depending on the element's writing mode, directionality, and text orientation.
815 margin-inline-end CSS, CSS Logical Property, CSS Property, Experimental, NeedsContent, Reference, margin-inline, margin-inline-end
The margin-inline-end CSS property defines the logical inline end margin of an element, which maps to a physical margin depending on the element's writing mode, directionality, and text orientation. In other words, it corresponds to the margin-top, margin-right, margin-bottom or margin-left property depending on the values defined for writing-mode, direction, and text-orientation.
816 margin-inline-start CSS, CSS Logical Property, CSS Property, Experimental, Reference, margin-inline, margin-inline-start
The margin-inline-start CSS property defines the logical inline start margin of an element, which maps to a physical margin depending on the element's writing mode, directionality, and text orientation. It corresponds to the margin-top, margin-right, margin-bottom, or margin-left property depending on the values defined for writing-mode, direction, and text-orientation.
817 margin-left CSS, CSS Property, Layout, Reference
The margin-left CSS property sets the margin area on the left side of an element. A positive value places it farther from its neighbors, while a negative value places it closer.
818 margin-right CSS, CSS Property, Reference
The margin-right CSS property sets the margin area on the right side of an element. A positive value places it farther from its neighbors, while a negative value places it closer.
819 margin-top CSS, CSS Property, Reference
The margin-top CSS property sets the margin area on the top of an element. A positive value places it farther from its neighbors, while a negative value places it closer.
820 margin-trim CSS, CSS Property, Draft, Experimental, NeedsContent, NeedsExample, NeedsLiveSample, Reference
The margin-trim property allows the container to trim the margins of its children where they adjoin the container’s edges.
821 mask CSS, CSS Masking, CSS Property, Layout, Reference, SVG, Web
The mask CSS property hides an element (partially or fully) by masking or clipping the image at specific points.
822 mask-border CSS, CSS Masking, CSS Property, Experimental, NeedsCompatTable, Reference
The mask-border CSS property lets you create a mask along the edge of an element's border.
823 mask-border-mode CSS, CSS Masking, CSS Property, Experimental, NeedsCompatTable, NeedsContent, NeedsExample, Reference
The mask-border-mode CSS property specifies the blending mode used in a mask border.
824 mask-border-outset CSS, CSS Masking, CSS Property, Experimental, NeedsCompatTable, NeedsExample, Reference
The mask-border-outset CSS property specifies the distance by which an element's mask border is set out from its border box.
825 mask-border-repeat CSS, CSS Masking, CSS Property, Experimental, NeedsCompatTable, NeedsExample, Reference
The mask-border-repeat CSS property sets how the edge regions of a source image are adjusted to fit the dimensions of an element's mask border.
826 mask-border-slice CSS, CSS Masking, CSS Property, Experimental, NeedsCompatTable, NeedsExample, Reference
The mask-border-slice CSS property divides the image set by mask-border-source into regions. These regions are used to form the components of an element's mask border.
827 mask-border-source CSS, CSS Masking, CSS Property, Experimental, NeedsCompatTable, NeedsExample, Reference
The mask-border-source CSS property sets the source image used to create an element's mask border.
828 mask-border-width CSS, CSS Masking, CSS Property, Experimental, NeedsCompatTable, NeedsExample, Reference
The mask-border-width CSS property sets the width of an element's mask border.
829 mask-clip CSS, CSS Masking, CSS Property, Experimental, Reference
The mask-clip CSS property determines the area which is affected by a mask. The painted content of an element must be restricted to this area.
830 mask-composite CSS, CSS Masking, CSS Property, Experimental, Reference
The mask-composite CSS property represents a compositing operation used on the current mask layer with the mask layers below it.
831 mask-image CSS, CSS Masking, CSS Property, Experimental, Reference
The mask-image CSS property sets the image that is used as mask layer for an element.
832 mask-mode CSS, CSS Masking, CSS Property, Experimental, Reference
The mask-mode CSS property sets whether the mask reference defined by mask-image is treated as a luminance or alpha mask.
833 mask-origin CSS, CSS Masking, CSS Property, Experimental, Reference
The mask-origin CSS property sets the origin of a mask.
834 mask-position CSS, CSS Masking, CSS Property, Experimental, Reference
The mask-position CSS property sets the initial position, relative to the mask position layer set by mask-origin, for each defined mask image.
835 mask-repeat CSS, CSS Masking, CSS Property, Experimental, Reference
The mask-repeat CSS property sets how mask images are repeated. A mask image can be repeated along the horizontal axis, the vertical axis, both axes, or not repeated at all.
836 mask-size CSS, CSS Masking, CSS Property, Experimental, Reference
The mask-size CSS property specifies the sizes of the mask images. The size of the image can be fully or partially constrained in order to preserve its intrinsic ratio.
837 mask-type CSS, CSS Masking, CSS Property, Reference, SVG
The mask-type CSS property sets whether an SVG <mask> element is used as a luminance or an alpha mask. It applies to the <mask> element itself.
838 max() CSS, CSS Function, Calculate, Compute, Function, Layout, Reference, Web, max
The max() CSS function lets you set the largest (most positive) value from a list of comma-separated expressions as the value of a CSS property value. The max() function can be used anywhere a <length>, <frequency>, <angle>, <time>, <percentage>, <number>, or <integer> is allowed.
839 max-block-size CSS, CSS Logical Property, CSS Property, Experimental, Layout, Maximum Height, Maximum Width, Reference, height, max-block-size, size, width
The max-block-size CSS property specifies the maximum size of an element in the direction opposite that of the writing direction as specified by writing-mode.
840 max-height CSS, CSS Property, Reference
The max-height CSS property sets the maximum height of an element. It prevents the used value of the height property from becoming larger than the value specified for max-height.
841 max-inline-size CSS, CSS Logical Properties, CSS Logical Property, CSS Property, Element size, Experimental, Reference, Text Direction, Writing Mode, max-inline-size
The max-inline-size CSS property defines the horizontal or vertical maximum size of an element's block depending on its writing mode. It corresponds to the max-width or the max-height property depending on the value defined for writing-mode. If the writing mode is vertically oriented, the value of max-inline-size relates to the maximal height of the element, otherwise it relates to the maximal width of the element. It relates to max-block-size, which defines the other dimension of the element.
842 max-width CSS, CSS Property, Reference
The max-width CSS property sets the maximum width of an element. It prevents the used value of the width property from becoming larger than the value specified by max-width.
843 min() CSS, CSS Function, Calculate, Compute, Function, Layout, Reference, min
The min() CSS function lets you set the smallest (most negative) value from a list of comma-separated expressions as the value of a CSS property value. The min() function can be used anywhere a <length>, <frequency>, <angle>, <time>, <percentage>, <number>, or <integer> is allowed.
844 min-block-size CSS, CSS Logical Property, CSS Property, Experimental, Reference, min-block-size
The min-block-size CSS property defines the minimum horizontal or vertical size of an element's block, depending on its writing mode. It corresponds to either the min-width or the min-height property, depending on the value of writing-mode.
845 min-height CSS, CSS Property, Reference
The min-height CSS property sets the minimum height of an element. It prevents the used value of the height property from becoming smaller than the value specified for min-height.
846 min-inline-size CSS, CSS Logical Property, CSS Property, Experimental, Reference, min-inline-size
The min-inline-size CSS property defines the horizontal or vertical minimal size of an element's block, depending on its writing mode. It corresponds to either the min-width or the min-height property, depending on the value of writing-mode.
847 min-width CSS, CSS Property, Reference
The min-width CSS property sets the minimum width of an element. It prevents the used value of the width property from becoming smaller than the value specified for min-width.
848 minmax() CSS, CSS Function, CSS Grid, Experimental, Layout, Reference, Web
The minmax() CSS function defines a size range greater than or equal to min and less than or equal to max. It is used with CSS Grids.
849 mix-blend-mode CSS, CSS Property, Compositing and Blending
The mix-blend-mode CSS property sets how an element's content should blend with the content of the element's parent and the element's background.
850 object-fit CSS, CSS Images, CSS Property, Layout, Reference, css layout, object-fit, size
The object-fit CSS property sets how the content of a replaced element, such as an <img> or <video>, should be resized to fit its container.
851 object-position CSS, CSS Images, CSS Property, Layout, Position, Reference, Replaced Elements, css layout, object-position
The object-position CSS property specifies the alignment of the selected replaced element's contents within the element's box.
852 offset CSS, CSS Motion Path, CSS Property, Experimental, Reference
The offset CSS property is a shorthand property for animating an element along a defined path. It sets the values of offset-position, offset-path, offset-distance, offset-rotate, and offset-anchor.
853 offset-anchor CSS, CSS Motion Path, Experimental, Motion Path, Reference, offset-anchor
The offset-anchor CSS property specifies the point inside the box of an element travelling along an offset-path that is actually moving along the path.
854 offset-distance CSS, CSS Motion Path, CSS Property, Experimental, Motion Path, Reference, motion-offset, offset-distance
The offset-distance CSS property specifies a position along an offset-path for an element to be placed.
855 offset-path CSS, CSS Motion Path, Experimental, Motion Path, Reference, motion-path, offset-path
The offset-path CSS property specifies a motion path for an element to follow and defines the element's positioning within the parent container or SVG coordinate system.
856 offset-position CSS, CSS Motion Path, CSS Property, Experimental, Property, offset-position
The offset-position CSS property defines the initial position of the offset-path.
857 offset-rotate CSS, CSS Motion Path, CSS Property, Experimental, Reference, offset-rotate
The offset-rotate CSS property defines the orientation/direction of the element as it is positioned along the offset-path.
858 opacity CSS, CSS Property, Reference
The opacity CSS property sets the opacity of an element. Opacity is the degree to which content behind an element is hidden, and is the opposite of transparency.
859 order CSS, CSS Flexible Boxes, CSS Property, Reference
The order CSS property sets the order to lay out an item in a flex or grid container. Items in a container are sorted by ascending order value and then by their source code order.
860 orphans CSS, CSS Fragmentation, CSS Multi-column Layout, CSS Property, Reference
The orphans CSS property sets the minimum number of lines in a block container that must be shown at the bottom of a page, region, or column.
861 outline CSS, CSS Outline, CSS Property, Layout, Reference
The outline CSS property is a shorthand to set various outline properties in a single declaration: outline-style, outline-width, and outline-color.
862 outline-color CSS, CSS Outline, CSS Property, CSS User Interace, HTML Colors, HTML Styles, Outline, Reference, Styles, Styling HTML, outline-color
The outline-color CSS property sets the color of an element's outline.
863 outline-offset CSS, CSS Outline, CSS Property, Reference
The outline-offset CSS property sets the amount of space between an outline and the edge or border of an element.
864 outline-style CSS, CSS Outline, CSS Property, Reference
The outline-style CSS property sets the style of an element's outline. An outline is a line that is drawn around an element, outside the border.
865 outline-width CSS, CSS Outline, CSS Property, Layout, Reference
The outline-width CSS property sets the thickness of an element's outline. An outline is a line that is drawn around an element, outside the border.
866 overflow CSS, CSS Box Model, CSS Property, Clipping, Layout, Reference, overflow, scrolling
The overflow shorthand CSS property sets what to do when an element's content is too big to fit in its block formatting context.
867 overflow-anchor CSS, CSS Property, CSS Scroll Anchoring, Reference
The overflow-anchor CSS property provides a way to opt out of the browser's scroll anchoring behavior, which adjusts scroll position to minimize content shifts.
868 Guide to scroll anchoring CSS, Guide, overflow-anchor, scroll anchoring
As a user of the web, you are probably familiar with the problem that scroll anchoring solves. You browse to a long page on a slow connection and begin to scroll to read the content; while you are busy reading, the part of the page you are looking at suddenly jumps. This has happened because large images or some other elements have just loaded further up in the content.
869 overflow-block CSS, CSS Box Model, CSS Property, Reference
The overflow-block CSS property sets what shows when content overflows the block start and block end edges of a box. This may be nothing, a scroll bar, or the overflow content.
870 overflow-inline CSS, CSS Box Model, CSS Property, Reference
The overflow-inline CSS property sets what shows when content overflows the inline start and end edges of a box. This may be nothing, a scroll bar, or the overflow content.
871 overflow-wrap CSS, CSS Property, CSS Text, Reference
The overflow-wrap CSS property applies to inline elements, setting whether the browser should insert line breaks within an otherwise unbreakable string to prevent text from overflowing its line box.
872 overflow-x CSS, CSS Box Model, CSS Property, Reference
The overflow-x CSS property sets what shows when content overflows a block-level element's left and right edges. This may be nothing, a scroll bar, or the overflow content.
873 overflow-y CSS, CSS Box Model, CSS Property, Reference
The overflow-y CSS property sets what shows when content overflows a block-level element's top and bottom edges. This may be nothing, a scroll bar, or the overflow content.
874 overscroll-behavior CSS, CSS Box Model, CSS Property, Reference, overscroll-behavior
The overscroll-behavior CSS property sets what a browser does when reaching the boundary of a scrolling area. It's a shorthand for overscroll-behavior-x and overscroll-behavior-y.
875 overscroll-behavior-block CSS, CSS Box Model, CSS Logical Properties, CSS Property, NeedsExample, Reference, overscroll-behavior-block
The overscroll-behavior-block CSS property sets the browser's behavior when the block direction boundary of a scrolling area is reached.
876 overscroll-behavior-inline CSS, CSS Box Model, CSS Logical Properties, CSS Property, NeedsExample, Reference, overscroll-behavior-inline
The overscroll-behavior-inline CSS property sets the browser's behavior when the inline direction boundary of a scrolling area is reached.
877 overscroll-behavior-x CSS, CSS Box Model, CSS Property, Reference, overscroll-behavior-x
The overscroll-behavior-x CSS property sets the browser's behavior when the horizontal boundary of a scrolling area is reached.
878 overscroll-behavior-y CSS, CSS Box Model, CSS Property, Reference, overscroll-behavior-y
The overscroll-behavior-y CSS property sets the browser's behavior when the vertical boundary of a scrolling area is reached.
879 padding CSS, CSS Padding, CSS Property, Reference
The padding CSS property sets the padding area on all four sides of an element. It is a shorthand for padding-top, padding-right, padding-bottom, and padding-left.
880 padding-block CSS
The padding-block CSS property defines the logical block start and end padding of an element, which maps to physical padding properties depending on the element's writing mode, directionality, and text orientation.
881 padding-block-end CSS, CSS Logical Property, CSS Property, Experimental, Reference, padding-block, padding-block-end
The padding-block-end CSS property defines the logical block end padding of an element, which maps to a physical padding depending on the element's writing mode, directionality, and text orientation. It corresponds to the padding-top, padding-right, padding-bottom, or padding-left property depending on the values defined for writing-mode, direction, and text-orientation.
882 padding-block-start CSS, CSS Logical Property, CSS Property, Experimental, Reference, padding-block, padding-block-start
The padding-block-start CSS property defines the logical block start padding of an element, which maps to a physical padding depending on the element's writing mode, directionality, and text orientation. It corresponds to the padding-top, padding-right, padding-bottom, or padding-left property depending on the values defined for writing-mode, direction, and text-orientation.
883 padding-bottom CSS, CSS Padding, CSS Property, Reference
The padding-bottom CSS property sets the height of the padding area on the bottom of an element.
884 padding-inline CSS
The padding-inline CSS property defines the logical inline start and end padding of an element, which maps to physical padding properties depending on the element's writing mode, directionality, and text orientation.
885 padding-inline-end CSS, CSS Logical Property, CSS Property, Experimental, Reference, padding-inline, padding-inline-end
The padding-inline-end CSS property defines the logical inline end padding of an element, which maps to a physical padding depending on the element's writing mode, directionality, and text orientation. It corresponds to the padding-top, padding-right, padding-bottom, or padding-left property depending on the values defined for writing-mode, direction, and text-orientation.
886 padding-inline-start CSS, CSS Logical Property, CSS Property, Experimental, Reference, padding-inline, padding-inline-start
The padding-inline-start CSS property defines the logical inline start padding of an element, which maps to a physical padding depending on the element's writing mode, directionality, and text orientation. It corresponds to the padding-top, padding-right, padding-bottom, or padding-left property depending on the values defined for writing-mode, direction, and text-orientation.
887 padding-left CSS, CSS Padding, CSS Property, Reference
The padding-left CSS property sets the width of the padding area to the left of an element.
888 padding-right CSS, CSS Padding, CSS Property, Reference
The padding-right CSS property sets the width of the padding area on the right of an element.
889 padding-top CSS, CSS Padding, CSS Property, Reference
The padding-top CSS property sets the height of the padding area on the top of an element.
890 page-break-after CSS, CSS Property, Page Breaks, Reference
The page-break-after CSS property adjusts page breaks after the current element.
891 page-break-before CSS, CSS Property, Page Breaks, Reference
The page-break-before CSS property adjusts page breaks before the current element.
892 page-break-inside CSS, CSS Property, Page Breaks, Reference
The page-break-inside CSS property adjusts page breaks inside the current element.
893 paint() CSS, CSS Function, CSS4-images, Houdini, Reference, Web
The paint() CSS function defines an <image> value generated with a PaintWorklet.
894 paint-order CSS, Experimental, Reference, SVG, Web, paint-order
The paint-order CSS property lets you control the order in which the fill and stroke (and painting markers) of text content and shapes are drawn.
895 perspective 3D, CSS, CSS Property, CSS Transforms, Distance, Graphics, Property, Reference, perspective
The perspective CSS property determines the distance between the z=0 plane and the user in order to give a 3D-positioned element some perspective.
896 perspective-origin 3D, CSS, CSS Property, CSS Transforms, Graphics, Property, Reference, Transforms, perspective, perspective-origin
The perspective-origin CSS property determines the position at which the viewer is looking. It is used as the vanishing point by the perspective property.
897 place-content CSS, CSS Box Alignment, CSS Property, Reference, place-content
The place-content CSS property is a shorthand for align-content and justify-content. It can be used in any layout method which utilizes both of these alignment values.
898 place-items CSS, CSS Flexible Boxes, CSS Grid, CSS Property, Reference
The CSS place-items shorthand property sets the align-items and justify-items properties, respectively. If the second value is not set, the first value is also used for it.
899 place-self CSS, CSS Box Alignment, CSS Property, Reference
The place-self CSS property is a shorthand property sets both the align-self and justify-self properties. The first value is the align-self property value, the second the justify-self one. If the second value is not present, the first value is also used for it.
900 pointer-events CSS, CSS Property, Reference, SVG, pointer-events
The pointer-events CSS property sets under what circumstances (if any) a particular graphic element can become the target of pointer events.
901 position CSS, CSS Positioning, CSS Property, Reference
The position CSS property sets how an element is positioned in a document. The top, right, bottom, and left properties determine the final location of positioned elements.
902 quotes CSS, CSS Property, Generated Content, Layout, Reference, Web
The quotes CSS property sets how quotation marks appear.
903 radial-gradient() CSS, CSS Function, CSS Images, Graphics, Layout, Reference, Web, gradient
The radial-gradient() CSS function creates an image consisting of a progressive transition between two or more colors that radiate from an origin. Its shape may be a circle or an ellipse. The function's result is an object of the <gradient> data type, which is a special kind of <image>.
904 repeat() CSS, CSS Function, CSS Grid, Layout, Reference, Web
The repeat() CSS function represents a repeated fragment of the track list, allowing a large number of columns or rows that exhibit a recurring pattern to be written in a more compact form.
905 repeating-conic-gradient() CSS, CSS Function, CSS Images, Graphics, Layout, Reference, Web, gradient
The repeating-conic-gradient() CSS function creates an image consisting of a repeating gradient (rather than a single gradient) with color transitions rotated around a center point (rather than radiating from the center). Example repeating conic gradients include starbursts. The result of the repeating-conic-gradient() function is an object of the <gradient> data type, which is a special kind of <image>.
906 repeating-linear-gradient() CSS, CSS Function, CSS Images, Gradients, Graphics, Layout, Reference, Web
The repeating-linear-gradient() CSS function creates an image consisting of repeating linear gradients. It is similar to linear-gradient() and takes the same arguments, but it repeats the color stops infinitely in all directions so as to cover its entire container. The function's result is an object of the <gradient> data type, which is a special kind of <image>.
907 repeating-radial-gradient() CSS, CSS Function, CSS Images, Gradients, Graphics, Layout, Reference, Web
The repeating-radial-gradient() CSS function creates an image consisting of repeating gradients that radiate from an origin. It is similar to radial-gradient() and takes the same arguments, but it repeats the color stops infinitely in all directions so as to cover its entire container, similar to repeating-linear-gradient() . The function's result is an object of the <gradient> data type, which is a special kind of <image>.
908 resize Basic User Interface, CSS, CSS Property, Reference
The resize CSS property sets whether an element is resizable, and if so, in which directions.
909 revert CSS, CSS Cascade, CSS Value, Cascade, Keyword, Layout, Reference, Style, revert
The revert CSS keyword reverts the cascaded value of the property from its current value to the value the property would have had if no changes had been made by the current style origin to the current element.
910 right CSS, CSS Positioning, CSS Property, Layout, Reference, Web
The right CSS property participates in specifying the horizontal position of a positioned element. It has no effect on non-positioned elements.
911 rotate CSS, CSS Property, Reference, Rotate, Transforms, angle, rotation
The rotate CSS property allows you to specify rotation transforms individually and independently of the transform property. This maps better to typical user interface usage, and saves having to remember the exact order of transform functions to specify in the transform property.
912 row-gap (grid-row-gap) CSS, CSS Flexible Boxes, CSS Grid, CSS Property, Reference, row-gap
The row-gap CSS property sets the size of the gap (gutter) between an element's grid rows.
913 ruby-align CSS, CSS Property, CSS Ruby, Reference
The ruby-align CSS property defines the distribution of the different ruby elements over the base.
914 ruby-position CSS, CSS Property, CSS Ruby, Reference
The ruby-position CSS property defines the position of a ruby element relatives to its base element. It can be position over the element (over), under it (under), or between the characters, on their right side (inter-character).
915 scale CSS, CSS Property, Reference, Transforms
The scale CSS property allows you to specify scale transforms individually and independantly of the transform property. This maps better to typical user interface usage, and saves having to remember the exact order of transform functions to specify in the transform value.
916 scroll-behavior CSS, CSS Property, CSSOM View, Reference
The scroll-behavior CSS property sets the behavior for a scrolling box when scrolling is triggered by the navigation or CSSOM scrolling APIs.
917 scroll-margin CSS, Property, Reference, margin, scroll-margin, scrollbar, scrolling
The scroll-margin property is a shorthand property which sets all of the scroll-margin longhands, assigning values much like the margin property does for the margin-* longhands.
918 scroll-margin-block CSS, scroll-margin-block
The scroll-margin-block property is a shorthand property which sets the scroll-margin longhands in the block dimension.
919 scroll-margin-block-end CSS, scroll-margin-block-end
The scroll-margin-block-end property defines the margin of the scroll snap area at the end of the block dimension that is used for snapping this box to the snapport. The scroll snap area is determined by taking the transformed border box, finding its rectangular bounding box (axis-aligned in the scroll container’s coordinate space), then adding the specified outsets.
920 scroll-margin-block-start Beginner, CSS, Example, scroll-margin-block-start
The scroll-margin-block-start property defines the margin of the scroll snap area at the start of the block dimension that is used for snapping this box to the snapport. The scroll snap area is determined by taking the transformed border box, finding its rectangular bounding box (axis-aligned in the scroll container’s coordinate space), then adding the specified outsets.
921 scroll-margin-bottom CSS, CSS Property, Reference, Scroll margin bottom, Web, scroll-margin, scroll-margin-bottom
The scroll-margin-bottom property defines the bottom margin of the scroll snap area that is used for snapping this box to the snapport. The scroll snap area is determined by taking the transformed border box, finding its rectangular bounding box (axis-aligned in the scroll container’s coordinate space), then adding the specified outsets.
922 scroll-margin-inline CSS, CSS Property, Reference, Web, scroll-margin, scroll-margin-inline
The scroll-margin-inline property is a shorthand property which sets the scroll-margin longhands in the inline dimension.
923 scroll-margin-inline-end
The scroll-margin-inline-end property defines the margin of the scroll snap area at the end of the inline dimension that is used for snapping this box to the snapport. The scroll snap area is determined by taking the transformed border box, finding its rectangular bounding box (axis-aligned in the scroll container’s coordinate space), then adding the specified outsets.
924 scroll-margin-inline-start CSS, CSS Property, Reference, Web, scroll-margin-inline, scroll-margin-inline-start
The scroll-margin-inline-start property defines the margin of the scroll snap area at the start of the inline dimension that is used for snapping this box to the snapport. The scroll snap area is determined by taking the transformed border box, finding its rectangular bounding box (axis-aligned in the scroll container’s coordinate space), then adding the specified outsets.
925 scroll-margin-left CSS, CSS Property, Reference, Scroll margin left, Web, scroll-margin, scroll-margin-left
The scroll-margin-left property defines the left margin of the scroll snap area that is used for snapping this box to the snapport. The scroll snap area is determined by taking the transformed border box, finding its rectangular bounding box (axis-aligned in the scroll container’s coordinate space), then adding the specified outsets.
926 scroll-margin-right CSS, CSS Property, Reference, Web, scroll-margin, scroll-margin-right
The scroll-margin-right property defines the right margin of the scroll snap area that is used for snapping this box to the snapport. The scroll snap area is determined by taking the transformed border box, finding its rectangular bounding box (axis-aligned in the scroll container’s coordinate space), then adding the specified outsets.
927 scroll-margin-top CSS, CSS Property, Reference, Web, scroll-margin, scroll-margin-top
The scroll-margin-top property defines the top margin of the scroll snap area that is used for snapping this box to the snapport. The scroll snap area is determined by taking the transformed border box, finding its rectangular bounding box (axis-aligned in the scroll container’s coordinate space), then adding the specified outsets.
928 scroll-padding CSS, CSS Property, scroll-snap
The scroll-padding property is a shorthand property that sets all of the scroll-padding-* longhands. It assigns values much like the padding property does for the padding-* longhands.
929 scroll-padding-block CSS, CSS Scroll Snap, Reference, Web, scroll-padding, scroll-padding-block
The scroll-padding-block property is a shorthand property which sets the scroll-padding longhands for the block dimension.
930 scroll-padding-block-end CSS, CSS Property, Reference, Web, scroll-padding-block, scroll-padding-block-end
The scroll-padding-block-end property defines offsets for the end edge in the block dimension of the optimal viewing region of the scrollport: the region used as the target region for placing things in view of the user. This allows the author to exclude regions of the scrollport that are obscured by other content (such as fixed-positioned toolbars or sidebars) or simply to put more breathing room between a targetted element and the edges of the scrollport.
931 scroll-padding-block-start CSS, CSS Property, Reference, Web, scroll-padding-block, scroll-padding-block-start
The scroll-padding-block-start property defines offsets for the start edge in the block dimension of the optimal viewing region of the scrollport: the region used as the target region for placing things in view of the user. This allows the author to exclude regions of the scrollport that are obscured by other content (such as fixed-positioned toolbars or sidebars) or simply to put more breathing room between a targetted element and the edges of the scrollport.
932 scroll-padding-bottom CSS, CSS Property, Reference, Web, scroll-padding, scroll-padding-bottom
The scroll-padding-bottom property defines offsets for the bottom of the optimal viewing region of the scrollport: the region used as the target region for placing things in view of the user. This allows the author to exclude regions of the scrollport that are obscured by other content (such as fixed-positioned toolbars or sidebars) or simply to put more breathing room between a targetted element and the edges of the scrollport.
933 scroll-padding-inline CSS, CSS Property, Reference, Web, scroll-padding-inline, scroll-padding-inline-end, scroll-padding-inline-start
The scroll-padding-inline property is a shorthand property which sets the scroll-padding longhands for the inline dimension.
934 scroll-padding-inline-end CSS, CSS Property, Web, scroll-padding-inline, scroll-padding-inline-end
The scroll-padding-inline-end property defines offsets for the end edge in the inline dimension of the optimal viewing region of the scrollport: the region used as the target region for placing things in view of the user. This allows the author to exclude regions of the scrollport that are obscured by other content (such as fixed-positioned toolbars or sidebars) or simply to put more breathing room between a targetted element and the edges of the scrollport.
935 scroll-padding-inline-start CSS, CSS Property, Web, scroll-padding-inline, scroll-padding-inline-start
The scroll-padding-inline-start property defines offsets for the start edge in the inline dimension of the optimal viewing region of the scrollport: the region used as the target region for placing things in view of the user. This allows the author to exclude regions of the scrollport that are obscured by other content (such as fixed-positioned toolbars or sidebars) or simply to put more breathing room between a targetted element and the edges of the scrollport.
936 scroll-padding-left CSS, CSS Property, Reference, scroll-padding, scroll-padding-left
The scroll-padding-left property defines offsets for the left of the optimal viewing region of the scrollport: the region used as the target region for placing things in view of the user. This allows the author to exclude regions of the scrollport that are obscured by other content (such as fixed-positioned toolbars or sidebars) or simply to put more breathing room between a targetted element and the edges of the scrollport.
937 scroll-padding-right CSS, Reference, Web, scroll-padding, scroll-padding-right
The scroll-padding-right property defines offsets for the right of the optimal viewing region of the scrollport: the region used as the target region for placing things in view of the user. This allows the author to exclude regions of the scrollport that are obscured by other content (such as fixed-positioned toolbars or sidebars) or simply to put more breathing room between a targetted element and the edges of the scrollport.
938 scroll-padding-top CSS, Reference, Web, scroll-padding, scroll-padding-top
The scroll-padding-top property defines offsets for the top of the optimal viewing region of the scrollport: the region used as the target region for placing things in view of the user. This allows the author to exclude regions of the scrollport that are obscured by other content (such as fixed-positioned toolbars or sidebars) or simply to put more breathing room between a targetted element and the edges of the scrollport.
939 scroll-snap-align
The scroll-snap-align property specifies the box’s snap position as an alignment of its snap area (as the alignment subject) within its snap container’s snapport (as the alignment container). The two values specify the snapping alignment in the block axis and inline axis, respectively. If only one value is specified, the second value defaults to the same value.
940 scroll-snap-coordinate CSS, CSS Property, CSS Scroll Snap, Deprecated, Reference
The scroll-snap-coordinate CSS property defines the x and y coordinate positions within an element that will align with its nearest ancestor scroll container's scroll-snap-destination for each respective axis.
941 scroll-snap-destination CSS, CSS Property, CSS Scroll Snap, Deprecated, Reference
The scroll-snap-destination CSS property defines the position in x and y coordinates within the scroll container's visual viewport which element snap points align with.
942 scroll-snap-points-x CSS, CSS Property, CSS Scroll Snap, Deprecated, Reference
The scroll-snap-points-x CSS property defines the horizontal positioning of snap points within the content of the scroll container they are applied to.
943 scroll-snap-points-y CSS, CSS Property, CSS Scroll Snap, Deprecated, Reference
The scroll-snap-points-y CSS property defines the vertical positioning of snap points within the content of the scroll container they are applied to.
944 scroll-snap-stop CSS, CSS Scroll Snap, Reference, Web, scroll-snap-stop
The scroll-snap-stop CSS property defines whether the scroll container is allowed to "pass over" possible snap positions.
945 scroll-snap-type CSS, CSS Property, CSS Scroll Snap, Reference
The scroll-snap-type CSS property sets how strictly snap points are enforced on the scroll container in case there is one.
946 scroll-snap-type-x CSS, CSS Property, CSS Scroll Snap, NeedsExample, Non-standard, Reference
The scroll-snap-type-x CSS property defines how strictly snap points are enforced on the horizontal axis of the scroll container in case there is one.
947 scroll-snap-type-y CSS, CSS Property, CSS Scroll Snap, NeedsExample, Non-standard, Reference
The scroll-snap-type-y CSS property defines how strictly snap points are enforced on the vertical axis of the scroll container in case there is one.
948 scrollbar-color CSS, CSS Property, Reference, css scrollbars, scrollbar-color
The scrollbar-color CSS property sets the color of the scrollbar track and thumb.
949 scrollbar-width CSS, CSS Property, Reference, css scrollbars, scrollbar-width
The scrollbar-width property allows the author to set the maximum thickness of an element’s scrollbars when they are shown.
950 shape-image-threshold Boundaries, CSS, CSS Property, CSS Shapes, Float Area, Opacity, Property, Reference, Shape, shape-image-threshold
The shape-image-threshold CSS property sets the alpha channel threshold used to extract the shape using an image as the value for shape-outside.
951 shape-margin Boundaries, CSS, CSS Property, CSS Shapes, Float Area, Property, Reference, Shape, float, margin, shape-margin
The shape-margin CSS property sets a margin for a CSS shape created using shape-outside.
952 shape-outside Boundaries, CSS, CSS Property, CSS Shapes, Float Area, Property, Reference, Shape, margin, shape-outside, wrapping
The shape-outside CSS property defines a shape—which may be non-rectangular—around which adjacent inline content should wrap.
953 symbols() CSS, CSS Counter Styles, Reference
The symbols() CSS function lets you define counter styles inline, directly as the value of a property such as list-style. Unlike @counter-style, symbols() is anonymous (i.e., it can only be used once). Although less powerful, it is shorter and easier to write than @counter-style.
954 tab-size CSS, CSS Property, CSS Text, Experimental, Reference
The tab-size CSS property is used to customize the width of tab characters (U+0009).
955 table-layout CSS, CSS Property, CSS Tables, Reference
The table-layout CSS property sets the algorithm used to lay out <table> cells, rows, and columns.
956 text-align CSS, CSS Property, CSS Text, Reference
The text-align CSS property sets the horizontal alignment of a block element or table-cell box. This means it works like vertical-align but in the horizontal direction.
957 text-align-last CSS, CSS Property, CSS Text, Experimental, Reference
The text-align-last CSS property sets how the last line of a block or a line, right before a forced line break, is aligned.
958 text-combine-upright CSS, CSS Property, CSS Writing Modes, Experimental, Reference
The text-combine-upright CSS property sets the combination of characters into the space of a single character.
959 text-decoration CSS, CSS Property, CSS Text Decoration, Reference
The text-decoration shorthand CSS property sets the appearance of decorative lines on text.
960 text-decoration-color CSS, CSS Property, CSS Text, CSS Text Decoration, HTML Colors, HTML Styles, Reference, Styling HTML, Styling text, color, colors
The text-decoration-color CSS property sets the color of decorations added to text by text-decoration-line.
961 text-decoration-line CSS, CSS Property, CSS Text Decoration, Reference
The text-decoration-line CSS property sets the kind of decoration that is used on text in an element, such as an underline or overline.
962 text-decoration-skip CSS, CSS Property, CSS Text Decoration, Experimental, Layout, Reference, Web
The text-decoration-skip CSS property sets what parts of an element’s content any text decoration affecting the element must skip over.
963 text-decoration-skip-ink CSS, CSS Property, CSS Text Decoration, Experimental, Layout, Reference, Web, text-decoration-skip-ink
The text-decoration-skip-ink CSS property specifies how overlines and underlines are drawn when they pass over glyph ascenders and descenders.
964 text-decoration-style CSS, CSS Property, CSS Text Decoration, Layout, Reference
The text-decoration-style CSS property sets the style of the lines specified by text-decoration-line. The style applies to all lines that are set with text-decoration-line.
965 text-decoration-thickness CSS, CSS Text Decoration, Property, Reference, text-decoration, text-decoration-thickness
The text-decoration-thickness CSS property sets the thickness, or width, of the decoration line that is used on text in an element, such as a line-through, underline, or overline.
966 text-emphasis CSS, CSS Property, CSS Text Decoration, Reference
The text-emphasis CSS property applies emphasis marks to text (except spaces and control characters). It is a shorthand for text-emphasis-style and text-emphasis-color.
967 text-emphasis-color CSS, CSS Property, CSS Styles, CSS Text Decoration, HTML Colors, Reference, Styling HTML, Text Emphasis, text-decoration-color
The text-emphasis-color CSS property sets the color of emphasis marks. This value can also be set using the text-emphasis shorthand.
968 text-emphasis-position CSS, CSS Property, CSS Text Decoration, Reference
The text-emphasis-position CSS property sets where emphasis marks are drawn. Like ruby text, if there isn't enough room for emphasis marks, the line height is increased.
969 text-emphasis-style CSS, CSS Property, CSS Text Decoration, Reference
The text-emphasis-style CSS property sets the appearance of emphasis marks. It can also be set, and reset, using the text-emphasis shorthand.
970 text-indent CSS, CSS Property, CSS Text, Layout, Reference
The text-indent CSS property sets the length of empty space (indentation) that is put before lines of text in a block.
971 text-justify CSS, CSS Property, CSS Text, Reference, text-justify
The text-justify CSS property sets what type of justification should be applied to text when text-align: justify; is set on an element.
972 text-orientation CSS, CSS Property, CSS Writing Modes, Reference
The text-orientation CSS property sets the orientation of the text characters in a line. It only affects text in vertical mode (when writing-mode is not horizontal-tb).
973 text-overflow CSS, CSS Property, Reference
The text-overflow CSS property sets how hidden overflow content is signaled to users. It can be clipped, display an ellipsis ('…'), or display a custom string.
974 text-rendering CSS, CSS Property, Legibility, Ligatures, Precision, Reference, SVG, Text, Text Features, Text Rendering
The text-rendering CSS property provides information to the rendering engine about what to optimize for when rendering text.
975 text-shadow CSS, CSS Property, CSS Styles, CSS Text Decoration, HTML Colors, HTML Styles, Reference, Styles, Styling HTML, color
The text-shadow CSS property adds shadows to text. It accepts a comma-separated list of shadows to be applied to the text and any of its decorations.
976 text-size-adjust CSS, CSS Mobile Text Size Adjustment, CSS Property, Experimental, NeedsExample, Reference
The text-size-adjust CSS property controls the text inflation algorithm used on some smartphones and tablets. Other browsers will ignore this property.
977 text-transform CSS, CSS Property, Layout, Reference, Text
The text-transform CSS property specifies how to capitalize an element's text. It can be used to make text appear in all-uppercase or all-lowercase, or with each word capitalized. It also can help improve legibility for ruby.
978 text-underline-offset CSS, CSS Text Decoration, Property, Reference, text-decoration, text-underline-offset
The text-underline-offset CSS property sets the offset distance of an underline text decoration line (applied using text-decoration) from its original position.
979 text-underline-position CSS, CSS Property, CSS Text Decoration, Reference
The text-underline-position CSS property specifies the position of the underline which is set using the text-decoration property's underline value.
980 top CSS, CSS Positioning, CSS Property, Reference
The top CSS property participates in specifying the vertical position of a positioned element. It has no effect on non-positioned elements.
981 touch-action CSS, CSS Property, Pointer Events, Reference
The touch-action CSS property sets how an element's region can be manipulated by a touchscreen user (for example, by zooming features built into the browser).
982 transform CSS, CSS Property, Reference, Transforms
The transform CSS property lets you rotate, scale, skew, or translate an element. It modifies the coordinate space of the CSS visual formatting model.
983 transform-box CSS, CSS Property, CSS Transforms, Experimental, NeedsExample, Reference
The transform-box CSS property defines the layout box to which the transform and transform-origin properties relate.
984 transform-origin CSS, CSS Property, CSS Transforms, Reference, default value: center, transform-origin
The transform-origin CSS property sets the origin for an element's transformations.
985 transform-style CSS, CSS Property, CSS Transforms, Experimental, Reference
The transform-style CSS property sets whether children of an element are positioned in the 3D space or are flattened in the plane of the element.
986 transition CSS, CSS Property, CSS Transitions, Reference
The transition CSS property is a shorthand property for transition-property, transition-duration, transition-timing-function, and transition-delay.
987 transition-delay CSS, CSS Property, CSS Transitions, Reference
The transition-delay CSS property specifies the duration to wait before starting a property's transition effect when its value changes.
988 transition-duration CSS, CSS Property, CSS Transitions, Reference
The transition-duration CSS property sets the length of time a transition animation should take to complete. By default, the value is 0s, meaning that no animation will occur.
989 transition-property CSS, CSS Property, CSS Transitions, Reference
The transition-property CSS property sets the CSS properties to which a transition effect should be applied.
990 transition-timing-function CSS, CSS Property, CSS Transitions, Reference
The transition-timing-function CSS property sets how intermediate values are calculated for CSS properties being affected by a transition effect.
991 translate CSS, CSS Property, Experimental, Reference, Transforms
The translate CSS property allows you to specify translation transforms individually and independently of the transform property. This maps better to typical user interface usage, and saves having to remember the exact order of transform functions to specify in the transform value.
992 unicode-bidi BiDi, CSS, CSS Property, Reference
The unicode-bidi CSS property, together with the direction property, determines how bidirectional text in a document is handled. For example, if a block of content contains both left-to-right and right-to-left text, the user-agent uses a complex Unicode algorithm to decide how to display the text. The unicode-bidi property overrides this algorithm and allows the developer to control the text embedding.
993 unset CSS, CSS Cascade, CSS Value, Layout, Reference, Style, unset
The unset CSS keyword resets a property to its inherited value if it inherits from its parent, and to its initial value if not.
994 url() CSS, CSS Function, Layout, Reference, Web, url()
The url() CSS function is used to include a file. The parameter is an absolute URL, a relative URL, or a data URI. The url() function can be passed as a parameter of another CSS functions, like the attr() function. Depending on the property for which it is a value, the resource sought can be an image, font, or a stylesheet. The url() functional notation is the value for the <url> data type.
995 user-modify CSS, CSS Property, CSS:Mozilla Extensions, CSS:WebKit Extensions, Deprecated, Non-standard, Reference
The user-modify property has no effect in Firefox. It was originally planned to determine whether or not the content of an element can be edited by a user.
996 user-select CSS, CSS Property, Reference, Selection, user-select
The user-select CSS property controls whether the user can select text. This doesn't have any effect on content loaded as chrome, except in textboxes.
997 var() CSS, CSS Custom Properties, CSS Function, CSS Variables, Experimental, Reference, Variables, var, var()
The var() CSS function can be used to insert the value of a custom property (sometimes called a "CSS variable") instead of any part of a value of another property.
998 vertical-align CSS, CSS Property, Reference
The vertical-align CSS property sets vertical alignment of an inline, inline-block or table-cell box.
999 visibility CSS, CSS Box Model, CSS Property, Layout, Reference, Web
The visibility CSS property shows or hides an element without changing the layout of a document. The property can also hide rows or columns in a <table>.
1000 white-space CSS, CSS Property, CSS Text, Reference, white-space
The white-space CSS property sets how white space inside an element is handled.
1001 widows CSS, CSS Fragmentation, CSS Multi-column Layout, CSS Property, Reference
The widows CSS property sets the minimum number of lines in a block container that must be shown at the top of a page, region, or column.
1002 width CSS, CSS Property, Reference, dimensions, size, width
The width CSS property sets an element's width. By default, it sets the width of the content area, but if box-sizing is set to border-box, it sets the width of the border area.
1003 will-change CSS, CSS Property, CSS Will-change, Performance, Reference, Transitions
The will-change CSS property hints to browsers how an element is expected to change. Browsers may set up optimizations before an element is actually changed.
1004 word-break CSS, CSS Property, Reference, break-word, word-break
The word-break CSS property sets whether line breaks appear wherever the text would otherwise overflow its content box.
1005 word-spacing CSS, CSS Property, CSS Text, Reference
The word-spacing CSS property sets the length of space between words and between tags.
1006 writing-mode CSS, CSS Property, Layout, Reference
The writing-mode CSS property sets whether lines of text are laid out horizontally or vertically, as well as the direction in which blocks progress. When set for an entire document, it should be set on the root element (html element for HTML documents).
1007 z-index CSS, CSS Positioning, CSS Property, Reference
The z-index CSS property sets the z-order of a positioned element and its descendants or flex items. Overlapping elements with a larger z-index cover those with a smaller one.
1008 zoom CSS, CSS Property, Non-standard, Reference
The non-standard zoom CSS property can be used to control the magnification level of an element.