CSS documentation index

Found 891 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-appearance (-webkit-appearance, appearance) -moz-appearance, -webkit-appearance, CSS, CSS Property, Non-standard, 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.
3 -moz-binding CSS, CSS Property, CSS:Mozilla Extensions, NeedsBrowserCompatibility, NeedsMobileBrowserCompatibility, NeedsUpdate, Non-standard, Reference, XBL
The -moz-binding CSS property is used by Mozilla-based applications to attach an XBL binding to a DOM element.
4 -moz-border-bottom-colors CSS, CSS Property, Non-standard, Reference
In Mozilla applications like Firefox, the -moz-border-bottom-colors CSS property sets a list of colors for the bottom border.
5 -moz-border-left-colors CSS, CSS Property, Non-standard, Reference
In Mozilla applications like Firefox, the -moz-border-left-colors CSS property sets a list of colors for the left border.
6 -moz-border-right-colors CSS, CSS Property, Non-standard, Reference
In Mozilla applications like Firefox, the -moz-border-right-colors CSS property sets a list of colors for the right border.
7 -moz-border-top-colors CSS, CSS Property, Non-standard, Reference
In Mozilla applications like Firefox, the -moz-border-top-colors CSS property sets a list of colors for the top border.
8 -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.
9 -moz-cell CSS, CSS Value, Deprecated, Reference
Don't use this value! Use the cursor value cell instead.
10 -moz-context-properties -moz-context-properties, CSS, 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.
11 -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.
12 -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.
13 -moz-image-rect CSS, CSS Function, 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.
14 -moz-image-region CSS, CSS Property, 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.
15 -moz-orient CSS, CSS Property, Non-standard, Reference
The -moz-orient CSS property specifies the orientation of the element to which it's applied.
16 -moz-outline-radius CSS, CSS Property, 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.
17 -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.
18 -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.
19 -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.
20 -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.
21 -moz-stack-sizing CSS, CSS Property, NeedsCompatTable, Non-standard, Reference, XUL
-moz-stack-sizing is an extended CSS property. Normally, a 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.
22 -moz-text-blink CSS, CSS Property, CSS:Mozilla Extensions, Deprecated, Non-standard, Reference
The -moz-text-blink non-standard Mozilla CSS extension specifies the blink mode.
23 -moz-user-focus CSS, CSS:Mozilla Extensions, NeedsBrowserCompatibility, NeedsContent, NeedsMobileBrowserCompatibility, Non-standard, Reference
The -moz-user-focus CSS property is used to indicate whether an element can have the focus.
24 -moz-user-input CSS, CSS Property, CSS:Mozilla Extensions, Non-standard, Reference
In Mozilla applications, -moz-user-input determines if an element will accept user input.
25 -moz-user-modify CSS, Deprecated, NeedsMobileBrowserCompatibility, Non-standard, Reference
The -moz-user-modify property has no effect. It was originally planned to determine whether or not the content of an element can be edited by a user.
26 -moz-window-dragging CSS, CSS Property, Chrome code, Non-standard, Reference, XUL
The -moz-window-dragging CSS property specifies whether a window is draggable or not. It only works in Chrome code, and only on Mac OS X.
27 -moz-window-shadow CSS, CSS Property, NeedsCompatTable, Non-standard, Reference, XUL
The -moz-window-shadow CSS property specifies whether a window will have a shadow. It only works on Mac OS X.
28 -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.
29 -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.
30 -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.
31 -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.
32 -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.
33 -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.
34 -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.
35 -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.
36 -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.
37 -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.
38 -ms-filter CSS, CSS Property, Non-standard, Reference
The -ms-filter CSS property is a Microsoft extension that sets or retrieves the filter or collection of filters applied to an object.
39 -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.
40 -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.
41 -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.
42 -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.
43 -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.
44 -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.
45 -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.
46 -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.
47 -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.
48 -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.
49 -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.
50 -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.
51 -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.
52 -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.
53 -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.
54 -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.
55 -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.
56 -ms-scroll-snap-points-y
The -ms-scroll-snap-points-y CSS property is a Microsoft extension that specifies where snap-points will be located along the y-axis.
57 -ms-scroll-snap-type
The -ms-scroll-snap-type CSS property is a Microsoft extension that specifies what type of snap-point should be used for the current element.
58 -ms-scroll-snap-x
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.
59 -ms-scroll-snap-y
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.
60 -ms-scroll-translation
The -ms-scroll-translation CSS property is a Microsoft extension that specifies whether vertical-to-horizontal scroll wheel translation occurs on the specified element.
61 -ms-scrollbar-3dlight-color CSS, CSS Property, 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.
62 -ms-scrollbar-arrow-color CSS, CSS Property, 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.
63 -ms-scrollbar-base-color CSS, CSS Property, 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.
64 -ms-scrollbar-darkshadow-color CSS, CSS Property, Non-standard, Reference
The -ms-scrollbar-darkshadow-color CSS property is a Microsoft extension that specifies the color of a scroll bar's gutter.
65 -ms-scrollbar-face-color CSS, CSS Property, 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.
66 -ms-scrollbar-highlight-color CSS, CSS Property, 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.
67 -ms-scrollbar-shadow-color CSS, CSS Property, 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.
68 -ms-scrollbar-track-color CSS, CSS Property, 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.
69 -ms-text-autospace
The -ms-text-autospace CSS property is a Microsoft extension that specifies the autospacing and narrow space width adjustment of text.
70 -ms-touch-select
The -ms-touch-select CSS property is a Microsoft extension that toggles the gripper visual elements that enable touch text selection.
71 -ms-user-select
The -ms-user-select CSS property is a Microsoft extension that specifies a keyword value that indicates where users are able to select text within an element.
72 -ms-wrap-flow
The -ms-wrap-flow CSS property is a Microsoft extension that specifies how exclusions impact inline content within block-level elements.
73 -ms-wrap-margin
The -ms-wrap-margin CSS property is a Microsoft extension that specifies a margin that offsets the inner wrap shape from other shapes.
74 -ms-wrap-through
The -ms-wrap-through CSS property is a Microsoft extension that specifies how content should wrap around an exclusion element.
75 -webkit-border-before CSS, CSS Property, 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.
76 -webkit-box-reflect CSS, CSS Property, Non-standard, Reference, WebKit
The -webkit-box-reflect CSS property lets you reflect the content of an element in one specific direction.
77 -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.
78 -webkit-mask-box-image CSS, Layout, Non-standard, Reference, Web
-webkit-mask-box-image sets the mask image for an element's border box.
79 -webkit-mask-composite CSS, CSS Masking, CSS Property, Non-standard, Reference
The -webkit-mask-composite property specifies the manner in which multiple mask images applied to the same element are composited with one another.
80 -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.
81 -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.
82 -webkit-mask-repeat-x CSS, CSS Masking, CSS Property, NeedsBrowserCompatibility, NeedsMobileBrowserCompatibility, Non-standard, Reference
The -webkit-mask-repeat-x property specifies whether and how a mask image is repeated (tiled) horizontally.
83 -webkit-mask-repeat-y CSS, CSS Masking, CSS Property, NeedsBrowserCompatibility, NeedsMobileBrowserCompatibility, Non-standard, Reference
The -webkit-mask-repeat-y property specifies whether and how a mask image is repeated (tiled) vertically.
84 -webkit-overflow-scrolling CSS, CSS Property, NeedsBrowserCompatibility, NeedsLiveSample, NeedsMobileBrowserCompatibility, Non-standard, Reference
The -webkit-overflow-scrolling CSS property controls whether or not touch devices use momentum-based scrolling for a given element.
85 -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.
86 -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.
87 -webkit-text-fill-color CSS, CSS Property, NeedsBrowserCompatibility, NeedsMobileBrowserCompatibility, 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.
88 -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.
89 -webkit-text-stroke-color CSS, CSS Property, NeedsBrowserCompatibility, NeedsMobileBrowserCompatibility, Non-standard, Reference
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.
90 -webkit-text-stroke-width CSS, Experimental, NeedsBrowserCompatibility, NeedsMobileBrowserCompatibility, Non-standard, Reference
The -webkit-text-stroke-width CSS property specifies the width of the stroke for text.
91 -webkit-touch-callout CSS, CSS Property, Layout, NeedsBrowserCompatibility, NeedsLiveSample, Non-standard, Reference
The -webkit-touch-callout CSS property controls the display of the default callout shown when you touch and hold a touch target.
92 :-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.
93 :-moz-drag-over CSS, CSS:Mozilla Extensions, NeedsCompatTable, Non-standard, Pseudo-class, Reference
The :-moz-drag-over CSS pseudo-class is is a Mozilla extension that matches an element when a dragover event is called on it.
94 :-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.
95 :-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.
96 :-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.
97 :-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.
98 :-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.
99 :-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.
100 :-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.
101 :-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.
102 :-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".
103 :-moz-locale-dir(rtl) 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".
104 :-moz-lwtheme CSS, Lightweight themes, NeedsCompatTable, NeedsExample, Non-standard, Pseudo-class, Reference, Themes
The :-moz-lwtheme pseudo-class matches in chrome documents when the root element's lightweightthemes attribute is true and a theme is selected.
105 :-moz-lwtheme-brighttext CSS, Non-standard, Pseudo-class, Reference, Themes
The :-moz-lwtheme-brighttext pseudo-class matches in chrome documents when :-moz-lwtheme is true and a lightweight theme with a bright text color is selected.
106 :-moz-lwtheme-darktext CSS, Non-standard, Pseudo-class, Reference, Themes
The :-moz-lwtheme-darktext pseudo-class matches in chrome documents when :-moz-lwtheme is true and a lightweight theme with a dark text color is selected.
107 :-moz-only-whitespace CSS, CSS:Mozilla Extensions, NeedsCompatTable, Non-standard, Pseudo-class, Reference
The :-moz-only-whitespace CSS pseudo-class is a Mozilla extension that matches elements that have no child nodes at all, or only have empty text nodes or text nodes that have only whitespace in them.
108 :-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.
109 :-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.
110 :-moz-system-metric(images-in-menus) CSS, NeedsCompatTable, 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.
111 :-moz-system-metric(mac-graphite-theme) CSS, NeedsCompatTable, 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.
112 :-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.
113 :-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.
114 :-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.
115 :-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.
116 :-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.
117 :-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.
118 :-moz-system-metric(windows-default-theme) CSS, NeedsMobileBrowserCompatibility, 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.
119 :-moz-tree-cell CSS, NeedsCompatTable, NeedsContent, NeedsExample, Non-standard, Reference, XUL
Activated by the properties attribute.
120 :-moz-tree-cell-text CSS, NeedsCompatTable, NeedsContent, NeedsExample, Non-standard, Reference, XUL
Activated by the properties attribute.
121 :-moz-tree-cell-text(hover) CSS, NeedsCompatTable, NeedsContent, NeedsExample, Non-standard, Pseudo-class, Reference, XUL
The :-moz-tree-cell-text(hover) CSS pseudo-class will match an element if the mouse cursor is presently hovering over text in a tree cell.
122 :-moz-tree-column CSS, NeedsCompatTable, NeedsContent, NeedsExample, Non-standard, Reference, XUL
Activated by the properties attribute.
123 :-moz-tree-drop-feedback CSS, NeedsCompatTable, NeedsContent, NeedsExample, Non-standard, Pseudo-class, Reference, XUL
Activated by the properties attribute.
124 :-moz-tree-image CSS, NeedsCompatTable, NeedsContent, NeedsLiveSample, Non-standard, Reference, XUL
Activated by the properties attribute.
125 :-moz-tree-indentation CSS, NeedsCompatTable, NeedsContent, NeedsExample, Non-standard, Reference, XUL
Activated by the properties attribute.
126 :-moz-tree-line CSS, Non-standard, Reference, XUL
Activated by the properties attribute.
127 :-moz-tree-progressmeter CSS, NeedsCompatTable, NeedsContent, NeedsExample, Non-standard, Reference, XUL
Activated when the type attribute is set to progressmeter.
128 :-moz-tree-row(hover) CSS, NeedsCompatTable, NeedsContent, NeedsExample, Non-standard, Pseudo-class, Reference
The :-moz-tree-row(hover) CSS pseudo-class will match an element if the mouse cursor is presently hovering over a tree row.
129 :-moz-tree-separator CSS, NeedsCompatTable, NeedsContent, NeedsExample, Non-standard, Reference, XUL
Activated by the properties attribute.
130 :-moz-tree-twisty CSS, Non-standard, Reference, XUL
Activated by the properties attribute.
131 :-moz-ui-invalid CSS, 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:
132 :-moz-ui-valid CSS, 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.
133 :-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.
134 :-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.
135 :-ms-input-placeholder CSS, Non-standard, Pseudo-class, Reference
The non-standard proprietary :-ms-input-placeholder pseudo-class represents the placeholder text of a form element. This allows web developers and theme designers to customize the appearance of placeholder text. This pseudo-class is only supported by Internet Explorer and Microsoft Edge.
136 :-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.
137 ::-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".
138 ::-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>).
139 ::-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>).
140 ::-moz-page CSS, CSS:Mozilla Extensions, NeedsBrowserCompatibility, NeedsContent, NeedsExample, NeedsMobileBrowserCompatibility, 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.
141 ::-moz-page-sequence CSS, CSS:Mozilla Extensions, NeedsBrowserCompatibility, NeedsExample, NeedsMobileBrowserCompatibility, Non-standard, Pseudo-element, Reference
The ::-moz-page-sequence CSS pseudo-element is a Mozilla extension that represents the background of a print preview.
142 ::-moz-placeholder CSS, CSS:Mozilla Extensions, Deprecated, Non-standard, Pseudo-element, Reference
The ::-moz-placeholder CSS pseudo-element is a Mozilla extension that represents any form element displaying placeholder text. This lets you customize the appearance of the placeholder text, which is a translucent gray color by default.
143 ::-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.)
144 ::-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).
145 ::-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.
146 ::-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".
147 ::-moz-scrolled-page-sequence CSS, CSS:Mozilla Extensions, NeedsBrowserCompatibility, NeedsContent, NeedsExample, NeedsMobileBrowserCompatibility, 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.
148 ::-moz-tree-row CSS, Non-standard, Pseudo-element, Reference, XUL
The ::-moz-tree-row CSS pseudo-element is used to select rows and apply styles to tree rows.
149 ::-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">.
150 ::-ms-check CSS, 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">.
151 ::-ms-clear CSS, 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. The clear button is only shown on focused, non-empty text controls.
152 ::-ms-expand CSS, 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.
153 ::-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>. This pseudo-element is available only in Internet Explorer 10 and Internet Explorer 11.
154 ::-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">.
155 ::-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">.
156 ::-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.
157 ::-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">.
158 ::-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">.
159 ::-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">.
160 ::-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">.
161 ::-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">.
162 ::-ms-value CSS, NeedsCompatTable, 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.
163 ::-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".
164 ::-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.
165 ::-webkit-input-placeholder CSS, NeedsBrowserCompatibility, NeedsMobileBrowserCompatibility, Non-standard, Pseudo-element, Reference
The non-standard proprietary ::-webkit-input-placeholder pseudo-element represents the placeholder text of a form element. This allows web developers and theme designers to customize the appearance of placeholder text. This pseudo-class is only supported by WebKit and Blink.
166 ::-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.
167 ::-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.
168 ::-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.
169 ::-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.
170 ::-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.
171 ::-webkit-outer-spin-button CSS, NeedsBrowserCompatibility, NeedsMobileBrowserCompatibility, 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.
172 ::-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.
173 ::-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.
174 ::-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.
175 ::-webkit-scrollbar CSS, NeedsCompatTable, Pseudo-element, Reference
The ::-webkit-scrollbar CSS pseudo-element affects the style of the scrollbar of an element.
176 ::-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.
177 ::-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.
178 ::-webkit-slider-runnable-track CSS, 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> of type="range".
179 ::-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.
180 ::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.
181 ::backdrop CSS, Full-screen, Layout, NeedsContent, Pseudo-element, Reference
The ::backdrop CSS pseudo-element is a box rendered immediately below any element rendered in fullscreen mode (and above any lower elements in the stack).
182 ::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.
183 ::cue (: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.
184 ::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).
185 ::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.
186 ::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.
187 ::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.
188 ::placeholder CSS, Experimental, Pseudo-element, Reference
The ::placeholder CSS pseudo-element represents the placeholder text of a form element.
189 ::selection CSS, Experimental, Layout, Pseudo-element, Reference
The ::selection CSS pseudo-element applies styles to the portion of a document that has been highlighted by the user (such as with the mouse).
190 ::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).
191 ::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.
192 :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.
193 :any-link CSS, Experimental, Layout, NeedsBrowserCompatibility, NeedsMobileBrowserCompatibility, 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.
194 :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.
195 :default CSS, Layout, Pseudo-class, Reference, Web
The :default CSS pseudo-class represents any form element that is the default among a group of related elements.
196 :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).
197 :dir() BiDi, CSS, Experimental, Pseudo-class, Reference
The :dir() CSS pseudo-class matches elements based on the directionality of the text contained in them.
198 :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.
199 :empty CSS, Layout, 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 or processing instructions do not affect whether an element is considered empty.
200 :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.
201 :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.
202 :first-child CSS, Layout, Pseudo-class, Reference, Web
The :first-child CSS pseudo-class represents the first element among a group of sibling elements.
203 :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.
204 :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.
205 :focus-visible CSS, Layout, Pseudo-class, Reference, Web
The :focus-visible pseudo-class applies while an element matches the focus pseudo-class and the UA determines via heuristics that the focus should be made evident on the element. (Many browsers show a “focus ring” by default in this case.)
206 :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.)
207 :fullscreen CSS, Experimental, Full-screen, Pseudo-class, Reference
The :fullscreen CSS pseudo-class represents an element that's displayed when the browser is in fullscreen mode.
208 :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.
209 :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 select a custom element from inside its shadow DOM.
210 :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.
211 :host-context() :host-context(), CSS, 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.
212 :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).
213 :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.
214 :indeterminate CSS, Layout, Pseudo-class, Reference, Web
The :indeterminate CSS pseudo-class represents any form element whose state is indeterminate.
215 :invalid CSS, Layout, Pseudo-class, Reference, Web
The :invalid CSS pseudo-class represents any <input> or other <form> element whose contents fail to validate.
216 :lang() CSS, Layout, Pseudo-class, Reference, Web
The :lang() CSS pseudo-class matches elements based on the language they are determined to be in.
217 :last-child CSS, Layout, Pseudo-class, Reference, Web
The :last-child CSS pseudo-class represents the last element among a group of sibling elements.
218 :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.
219 :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.
220 :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.
221 :matches() (:any()) CSS, Pseudo-class, Reference, Web
The :matches() 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.
222 :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.
223 :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.
224 :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.
225 :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.
226 :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.
227 :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.
228 :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.
229 :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.
230 :out-of-range CSS, Layout, Pseudo-class, Reference
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.
231 :placeholder-shown CSS, Experimental, Pseudo-class, Reference
The :placeholder-shown CSS pseudo-class represents any <input> or <textarea> element that is currently displaying placeholder text.
232 :read-only CSS, Layout, Pseudo-class, Reference, Web
The :read-only CSS pseudo-class represents an element (such as a locked text input) that is not editable by the user.
233 :read-write CSS, Layout, Pseudo-class, Reference, Web
The :read-write CSS pseudo-class represents an element (such as a text input) that is editable by the user.
234 :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.
235 :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.
236 :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.
237 :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.
238 :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.
239 :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.
240 :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.
241 &lt;angle&gt; 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.
242 &lt;basic-shape&gt; CSS, CSS Data Type, CSS Shapes, Reference
The <basic-shape> CSS data type represents a shape used in the clip-path or shape-outside properties.
243 &lt;blend-mode&gt; Blend modes, CSS, CSS Data Type, Compositing, Compositing and Blending, Reference
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.
244 &lt;color&gt; CSS, CSS Data Type, Layout, Reference, Web
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.
245 &lt;custom-ident&gt; 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.
246 &lt;filter-function&gt; 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.
247 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>.
248 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>.
249 contrast() CSS, CSS Function, Filter Effects, Reference
The contrast() CSS function adjusts the contrast of the input image. Its result is a <filter-function>.
250 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>.
251 grayscale() CSS, CSS Function, Filter Effects, Reference
The grayscale() CSS function converts the input image to grayscale. Its result is a <filter-function>.
252 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>.
253 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>.
254 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>.
255 saturate() CSS, CSS Function, Filter Effects, Reference
The saturate() CSS function super-saturates or desaturates the input image. Its result is a <filter-function>.
256 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>.
257 url() CSS, Junk, Reference
The url() CSS function uses an SVG filter to change the appearance on the input image.
258 &lt;flex&gt; 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.
259 &lt;frequency&gt; CSS, CSS Data Type, Layout, 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.
260 &lt;gradient&gt; 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.
261 &lt;image&gt; 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(). Images can be used with numerous CSS properties, such as background-image, border-image, content, cursor, and list-style-image.
262 &lt;integer&gt; 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.
263 &lt;length&gt; 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.
264 &lt;number&gt; 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.
265 &lt;percentage&gt; 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.
266 &lt;position&gt; CSS, CSS Data Type, Layout, Reference, Web
The <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 property.
267 &lt;ratio&gt; 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.
268 &lt;resolution&gt; 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.
269 &lt;shape&gt; 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.
270 &lt;single-transition-timing-function&gt; CSS, CSS Animations, CSS Data Type, CSS Transitions, Layout, Reference
The <single-transition-timing-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.
271 &lt;string&gt; 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.
272 &lt;time&gt; 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.
273 &lt;transform-function&gt; 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.
274 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.
275 matrix3d() CSS, CSS Function, CSS Transforms, NeedsExample, Reference
The matrix3d() CSS function defines a 3D transformation as a 4x4 homogeneous matrix. Its result is a <transform-function> data type.
276 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. Its result is a <transform-function> data type.
277 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.
278 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.
279 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.
280 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.
281 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.
282 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.
283 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.
284 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.
285 scaleY() CSS, CSS Function, CSS Transforms, Reference
The scaleY() CSS function defines a transformation that resizes an element along the y-axis (vertically). Its result is a <transform-function> data type.
286 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.
287 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.
288 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.
289 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.
290 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.
291 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.
292 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.
293 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.
294 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.
295 &lt;translation-value&gt; 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().
296 &lt;url&gt; 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.
297 @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.
298 @counter-style At-rule, CSS, 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.
299 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.
300 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.
301 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.
302 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.
303 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).
304 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.
305 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.
306 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).
307 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.
308 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.
309 @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.
310 @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 the user's own computer.
311 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.
312 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.
313 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.
314 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.
315 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.
316 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.
317 @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.
318 @import At-rule, CSS, 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.
319 @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.
320 @media @media, At-rule, CSS, 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.
321 -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.
322 -moz-mac-graphite-theme @media, CSS, 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.
323 -moz-maemo-classic @media, CSS, 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.
324 -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.
325 -moz-scrollbar-end-backward @media, CSS, Non-standard, media feature

Media: media/visual
Accepts min/max prefixes: no
326 -moz-scrollbar-end-forward @media, CSS, Non-standard, media feature

Media: media/visual
Accepts min/max prefixes: no
327 -moz-scrollbar-start-backward @media, CSS, Non-standard, media feature

Media: media/visual
Accepts min/max prefixes: no
328 -moz-scrollbar-start-forward @media, CSS, Non-standard, media feature

Media: media/visual
Accepts min/max prefixes: no
329 -moz-scrollbar-thumb-proportional @media, CSS, Non-standard, media feature

Media: media/visual
Accepts min/max prefixes: no
330 -moz-touch-enabled @media, CSS, Non-standard, media feature

Media: media/visual
Accepts min/max prefixes: no
331 -moz-windows-accent-color-in-titlebar @media, CSS, 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.
332 -moz-windows-classic @media, CSS, Non-standard, media feature

Media: media/visual
Accepts min/max prefixes: no
333 -moz-windows-compositor @media, CSS, Non-standard, media feature

Media: media/visual
Accepts min/max prefixes: no
334 -moz-windows-default-theme @media, CSS, Non-standard, media feature

Media: media/visual
Accepts min/max prefixes: no
335 -moz-windows-glass @media, CSS, Non-standard, media feature

Media: media/visual
Accepts min/max prefixes: no
336 -moz-windows-theme @media, CSS, 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.
337 -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.
338 -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.
339 -webkit-transform-2d @media, CSS, NeedsBrowserCompatibility, 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.
340 -webkit-transform-3d @media, CSS, NeedsBrowserCompatibility, 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.
341 -webkit-transition @media, Blink, CSS, Deprecated, NeedsBrowserCompatibility, 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.
342 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.
343 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.
344 aspect-ratio @media, CSS, Media Queries, NeedsBrowserCompatibility, Reference, media feature
The aspect-ratio CSS media feature can be used to test the aspect ratio of the viewport.
345 color @media, CSS, Media Queries, NeedsBrowserCompatibility, 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, NeedsBrowserCompatibility, 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, NeedsBrowserCompatibility, 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, NeedsBrowserCompatibility, 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 grid @media, CSS, Media Queries, NeedsBrowserCompatibility, Reference, media feature
The grid CSS media feature can be used to test whether the output device uses a grid-based screen.
353 height @media, CSS, Media Queries, NeedsBrowserCompatibility, 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).
354 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.
355 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.
356 light-level @media, CSS, Media Queries, Non-standard, Reference, media feature
The light-level CSS media feature can be used to test the ambient light level.
357 monochrome @media, CSS, Media Queries, NeedsMobileBrowserCompatibility, 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.
358 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).
359 overflow-block @media, CSS, Media Queries, NeedsBrowserCompatibility, 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.
360 overflow-inline @media, CSS, Media Queries, NeedsBrowserCompatibility, 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.
361 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.
362 resolution @media, CSS, Media Queries, NeedsBrowserCompatibility, Reference, media feature
The resolution CSS media feature can be used to test the pixel density of the output device.
363 scan @media, CSS, Media Queries, NeedsMobileBrowserCompatibility, 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).
364 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.
365 update @media, CSS, Media Queries, NeedsMobileBrowserCompatibility, 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.
366 width @media, CSS, Media Queries, NeedsBrowserCompatibility, 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).
367 @namespace At-rule, CSS, 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.
368 @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.
369 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.
370 marks @page, CSS, CSS Descriptor, Experimental, Layout, NeedsBrowserCompatibility, NeedsMobileBrowserCompatibility, 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.
371 size @page, CSS, CSS Descriptor, Experimental, NeedsBrowserCompatibility, NeedsMobileBrowserCompatibility, 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.
372 @styleset CSS, NeedsContent, Reference, Web
See @font-feature-values .
373 @supports At-rule, CSS, Layout, Reference, Web
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.
374 @viewport @viewport, At-rule, CSS, 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).
375 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.
376 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.
377 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.
378 max-zoom @viewport, CSS, CSS Descriptor, NeedsBrowserCompatibility, NeedsExample, NeedsMobileBrowserCompatibility, 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.
379 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.
380 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.
381 min-zoom @viewport, CSS, CSS Descriptor, NeedsBrowserCompatibility, NeedsExample, NeedsMobileBrowserCompatibility, 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.
382 orientation @viewport, CSS, CSS Descriptor, NeedsBrowserCompatibility, NeedsExample, Reference
The orientation CSS descriptor controls the orientation of a document defined by @viewport.
383 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.
384 width @viewport, CSS, CSS Descriptor, Reference
The width CSS descriptor is shorthand for setting both the min-width and the max-width 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.
385 zoom @viewport, CSS, CSS Descriptor, Graphics, Layout, NeedsExample, Reference, Web
The zoom CSS descriptor sets the initial zoom factor of a document defined by the @viewport at-rule.
386 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.
387 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.
388 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.
389 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.
390 At-rule At-rule, CSS, Reference
An at-rule is a CSS statement 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.
391 Attribute selectors Attribute, Attribute selectors, CSS, CSS Attributes, Identifying Elements, Identifying Nodes, Reference, Selecting Elements, Selecting Nodes, Selectors
The CSS attribute selector matches elements based on the presence or value of a given attribute.
392 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.
393 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.
394 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.
395 Using CSS animations Advanced, CSS, CSS Animations, Example, Guide
CSS animations make it possible to animate transitions from one CSS style configuration to another.
396 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.
397 Scaling background images CSS, CSS Background, Example, Guide, Intermediate, Reference, Web
The background-size CSS property makes it possible to adjust the width and height of background images, thus overriding the default behavior which tiles background images at their full size.
398 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.
399 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.
400 Introduction to the CSS basic box model CSS, CSS Box Model, Guide, Layout, Position, box, box model, height, size, width
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.
401 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.
402 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.
403 CSS Box Alignment CSS, 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.
404 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.
405 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.
406 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.
407 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.
408 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.
409 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.
410 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.
411 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.
412 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.
413 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.
414 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.
415 CSS Flexible Box Layout CSS, CSS Flexible Boxes, Overview, Reference
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.
416 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 centre a box. In this guide, we will take a thorough look at how the alignment and justification properties work in Flexbox.
417 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.
418 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.
419 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.
420 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.
421 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.
422 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.
423 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.
424 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.
425 CSS Flow Layout
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. Inline elements display in the inline direction, that is in the direction that words are displayed in a sentence according to the Writing Mode of the document. Block elements display one after the other, as paragraphs do in the Writing Mode of that document. In English therefore, inline elements display one after the other starting on the left, and block elements start at the top and move down the page.
426 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.
427 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.
428 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.
429 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.
430 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.
431 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 layout 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 be then explained in greater detail in the rest of this guide.
432 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.
433 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.
434 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.
435 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.
436 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!
437 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.
438 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.
439 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.
440 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.
441 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.
442 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, so the number of HTTP requests is reduced.
443 Using CSS gradients Advanced, CSS, CSS Images, Example, 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 two types of gradients: linear (created with the linear-gradient() function) and radial (created with radial-gradient()).
444 CSS Lists CSS, CSS Lists, Overview, Reference
CSS Lists is a module of CSS that defines how lists can be laid out and styled.
445 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.
446 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.
447 CSS Logical Properties and Values CSS, CSS Logical Properties, Overview, Reference
CSS Logical Properties and Values is a module of CSS that introduces logical properties and values that provide the ability to control layout through logical, rather than physical, direction and dimension mappings.
448 CSS Masking CSS, CSS Masking, NeedsBrowserCompatibility, NeedsMobileBrowserCompatibility, Overview, Reference
CSS Masking is a CSS module that defines means, including masking and clipping, for partially or fully hiding portions of visual elements.
449 CSS Miscellaneous CSS, Overview, Reference
These pages contain CSS properties that are highly experimental or don't fit in any other categories.
450 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.
451 Basic Concepts of Multicol
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.
452 Handling Overflow in Multicol
In this guide we will look at how multicol deals with overflow, either inside the column boxes or in situations where there is more content than will fit into the container.
453 Handling content breaks in multicol
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 the properties which are part of the CSS Fragmentation specification. In this guide we see how Fragmentation works in multicol.
454 Spanning and Balancing Columns
In this guide we will look at how to cause elements to span across columns inside the multicol container, and also how to control how the columns fill.
455 Styling Columns
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.
456 Using multi-column layouts Advanced, CSS, CSS Multi-column Layout, Guide, Web
The CSS Multi-column Layout Module extends the block layout mode to allow the easy definition of multiple columns of text.
457 CSS Namespaces CSS, CSS Namespaces, NeedsMobileBrowserCompatibility, Overview, Reference, Web
CSS Namespaces is a CSS module that allows authors to specify XML namespaces in CSS.
458 CSS Paged Media CSS, CSS Paged Media, Overview, Reference
CSS Paged Media is a module of CSS that defines how page switches are handled.
459 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.
460 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.
461 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.
462 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.
463 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.
464 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:
465 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):
466 The stacking context Advanced, CSS, Guide, Reference, Understanding_CSS_z-index, 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.
467 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.
468 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:
469 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.
470 CSS Scroll Snap
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.
471 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.
472 CSS Shapes Boundaries, CSS, CSS Shapes, Overview, Reference, Shape, margin, wrapping
CSS Shapes describe geometric shapes for use in CSS. For the Level 1 specification, CSS Shapes can be applied to floating elements.
473 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.
474 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.
475 Shapes From Images CSS Shapes
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.
476 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.
477 CSS Table CSS, CSS Table, Overview, Reference
CSS Table is a CSS module that defines how to lay out table data.
478 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.
479 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.
480 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.
481 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.
482 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.
483 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.
484 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.
485 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).
486 CSS basic data types CSS, CSS Data Type, Overview, Reference
CSS basic data types define typical values (including keywords and units) accepted by CSS properties and functions. They are a special kind of component value type.
487 CSS documentation index CSS
Found 891 pages:
488 CSS reference CSS, Reference, l10n:priority
Use this CSS reference to browse an alphabetical index of all the standard CSS properties, pseudo-classes, pseudo-elements, data types, and at-rules. You can also browse a list of all the CSS selectors organized by type and a list of key CSS concepts. Also included is a brief DOM-CSS / CSSOM reference.
489 CSS selectors CSS, CSS Selectors, Overview, Reference, Selectors
CSS selectors define the elements to which a set of CSS rules apply.
490 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.
491 CSS3 CSS, NeedsUpdate, Reference
CSS3 is the latest evolution of the Cascading Style Sheets language and aims at extending CSS2.1. It brings a lot of long-awaited novelties, like rounded corners, shadows, gradients, transitions or animations, as well as new layouts like multi-columns, flexible box or grid layouts.
492 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.
493 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.
494 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 children of elements matched by the first.
495 Class selectors CSS, Reference, Selectors
The CSS class selector matches elements based on the contents of their class attribute.
496 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.
497 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.
498 Computed value CSS, Reference
The computed value of a CSS property is the value that is transferred from parent to child during inheritance.
499 Custom properties (--*) CSS, CSS Variables, Experimental, Reference
Property names that are prefixed with --, like --example-name, represent custom properties that contain a value that can be reused throughout the document using the (var()) function.
500 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 element matching the first selector. Selectors that utilize a descendant combinator are called descendant selectors.
501 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.
502 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.
503 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.
504 ID selectors CSS, Reference, Selectors
In an HTML document, the CSS ID selector matches an element based on the value of its id attribute. The selected element's ID attribute must match exactly the value given in the selector.
505 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").
506 Initial value CSS, Reference
The initial value of a CSS property is its default value, as listed in its definition table.
507 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.
508 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 deterime an element's containing block.
509 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:
510 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).
511 Media queries CSS, CSS3 Media Queries, 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.
512 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.
513 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).
514 Microsoft CSS extensions CSS, Non-standard, Reference
Microsoft applications such as Edge and Internet Explorer support a number of special Microsoft extensions to CSS. These extensions are prefixed with -ms.
515 Motion Path CSS, Experimental, Motion Path, Overview, Reference
Motion Path is a CSS module that allows authors to animate any graphical object along a custom path.
516 Mozilla CSS extensions CSS, CSS:Mozilla Extensions, Non-standard, 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. These extensions are prefixed with -moz.
517 Mozilla CSS support chart CSS, Junk, Reference
This page lists supported CSS selectors, properties, @-rules, Media queries and values in alphabetical order.
518 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:
519 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.
520 Pseudo-classes CSS, 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). For example, :hover can be used to change a button's color when the user hovers over it.
521 Pseudo-elements CSS, 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.
522 Questions about CSS Beginner, CSS, 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).
523 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.
524 Resolved value CSS, Reference
The resolved value of a CSS property is the value returned by getComputedStyle().
525 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.
526 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.
527 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.
528 Specified value CSS, Reference
The specified value of a CSS property is the value it receives from the document's style sheet.
529 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:
530 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.
531 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!
532 Linear-gradient Generator CSS, Tools
This tool can be used to create custom CSS3 linear-gradient() backgrounds.
533 Type selectors CSS, HTML, NeedsMobileBrowserCompatibility, 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.
534 Universal selectors CSS, Reference, Selectors
The CSS universal selector (*) matches elements of any type.
535 Used value CSS, Reference
The used value of a CSS property is its value after all calculations have been performed on the computed value.
536 Using CSS custom properties (variables) CSS, CSS Variables, Guide, Web
CSS 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);) .
537 Value definition syntax CSS, Reference
No summary!
538 Visual formatting model CSS, CSS Box Model, NeedsUpdate, Reference
The CSS visual formatting model is an algorithm that processes a document and displays it on visual media. This model is a basic concept of CSS.
539 WebKit CSS extensions CSS, Non-standard, Reference, WebKit
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. All -webkit prefixed properties also work with an -apple prefix. A few are prefixed with -epub.
540 align-content CSS, CSS Box Alignment, CSS Property, Reference
The CSS align-content property defines how the browser distributes space between and around content items along the cross-axis of their container, which is serving as a flexbox container.
541 align-items CSS, CSS Flexible Boxes, CSS Property, Reference
The CSS align-items property defines how the browser distributes space between and around flex items along the cross-axis of their container. This means it works like justify-content but in the perpendicular direction.
542 align-self CSS, CSS Flexible Boxes, CSS Property, Reference
The align-self CSS property aligns flex items of the current flex line overriding the align-items value. If any of the item's cross-axis margin is set to auto, then align-self is ignored.
543 all CSS, CSS Cascade, CSS Property, Reference
The all CSS shorthand property sets all of an element's properties (other than unicode-bidi and direction) to their initial or inherited values, or to the values specified in another stylesheet origin.
544 animation CSS, CSS Animations, CSS Property, Reference
The animation CSS property is a shorthand property for the various animation properties: animation-name, animation-duration, animation-timing-function, animation-delay, animation-iteration-count, animation-direction, animation-fill-mode, and animation-play-state.
545 animation-delay CSS, CSS Animations, CSS Property, Reference
The animation-delay CSS property specifies when an animation should start. You can begin the animation at a future point in time, immediately and from its beginning, or immediately and partway through the animation cycle.
546 animation-direction CSS, CSS Animations, CSS Property, Reference
The animation-direction CSS property specifies whether an animation should play forwards, backwards, or alternating back and forth.
547 animation-duration CSS, CSS Animations, CSS Property, Reference
The animation-duration CSS property specifies the length of time that an animation should take to complete one cycle.
548 animation-fill-mode CSS, CSS Animations, CSS Property, NeedsMobileBrowserCompatibility, Reference
The animation-fill-mode CSS property specifies how a CSS animation should apply styles to its target before and after its execution.
549 animation-iteration-count CSS, CSS Animations, CSS Property, CSS Property Animations
The animation-iteration-count CSS property specifies the number of times an animation cycle should be played before stopping. If multiple values are specified, each time the animation is played the next value in the list is used, cycling back to the first value after the last one is used.
550 animation-name CSS, CSS Animations, CSS Property, Reference
The animation-name CSS property specifies one or more animations that should be applied to an element. Each name indicates an @keyframes at-rule that defines the property values for the animation sequence.
551 animation-play-state CSS, CSS Animations, CSS Property, NeedsMobileBrowserCompatibility, Reference
The animation-play-state CSS property specifies whether an animation is running or paused. In JavaScript, this can be queried to determine whether or not the animation is currently running. In addition, you can use JavaScript to set its value to pause or resume playback of an animation.
552 animation-timing-function CSS, CSS Animations, CSS Property, Reference
The animation-timing-function CSS property specifies how a CSS animation should progress over the duration of each cycle.
553 attr CSS, CSS Function, Layout, Reference, Web
The attr() CSS function is used to retrieve the value of an attribute of the selected element and use it in the style sheet. 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.
554 aural CSS, Deprecated, Reference
The aural CSS media type is used for devices that have speech output capabilities.
555 azimuth CSS, CSS Property, Deprecated, NeedsBrowserCompatibility, NeedsMobileBrowserCompatibility, 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.
556 backdrop-filter CSS, CSS Property, 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.
557 backface-visibility CSS, CSS Property, CSS Transforms, Experimental, Reference
The backface-visibility CSS property determines whether the back face of an element is visible when turned towards the user.
558 background CSS, CSS Background, CSS Property, Reference
The background CSS property is a short way to declare all background style options at once, including color, image, origin and size, repeat method, and other features.
559 background-attachment CSS, CSS Background, CSS Property, Reference
If a background-image is specified, the background-attachment CSS property determines whether that image's position is fixed within the viewport, or scrolls along with its containing block.
560 background-blend-mode CSS, CSS Property, Compositing and Blending
The background-blend-mode CSS property determines how an element's background images should blend with each other and with the element's background color.
561 background-clip CSS, CSS Background, CSS Property, NeedsMobileBrowserCompatibility, Reference
The background-clip CSS property specifies if an element's background, whether a <color> or an <image>, extends underneath its border.
562 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.
563 background-image CSS, CSS Background, CSS Property, NeedsMobileBrowserCompatibility, Reference
The background-image CSS property sets one or more background images on an element.
564 background-origin CSS, CSS Background, CSS Property, Reference
The background-origin CSS property sets the background positioning area, i.e., the origin position of an image specified using the background-image property.
565 background-position CSS, CSS Background, CSS Property, NeedsMobileBrowserCompatibility, Reference
The background-position CSS property sets the initial position, relative to the background position layer defined by background-origin, for each defined background image.
566 background-position-x CSS, CSS Background, CSS Property, Experimental, NeedsBrowserCompatibility, NeedsMobileBrowserCompatibility, Reference
The background-position-x CSS property sets the initial horizontal position, relative to the background position layer defined by background-origin, for each defined background image.
567 background-position-y CSS, CSS Background, CSS Property, Experimental, Reference
The background-position-y CSS property sets the initial vertical position, relative to the background position layer defined by background-origin, for each defined background image.
568 background-repeat CSS, CSS Background, CSS Property, Reference
The background-repeat CSS property defines how background images are repeated. A background image can be repeated along the horizontal axis, the vertical axis, both axes, or not repeated at all.
569 background-size CSS, CSS Background, CSS Property, NeedsMobileBrowserCompatibility, Reference
The background-size CSS property specifies the size of the element's background image. The image can be left to its natural size, stretched to a new size, or constrained to fit the available space while preserving its intrinsic proportions.
570 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.
571 border CSS, CSS Borders, CSS Property, Layout, NeedsMobileBrowserCompatibility, Reference
The border CSS property is a shorthand for setting all individual border property values in a single declaration: border-width, border-style, and border-color.
572 border-block-end CSS, CSS Logical Property, CSS Property, Experimental, Reference
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.
573 border-block-end-color CSS, CSS Logical Property, CSS Property, Experimental, Reference
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.
574 border-block-end-style CSS, CSS Logical Property, CSS Property, Experimental, Reference
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.
575 border-block-end-width CSS, CSS Logical Property, CSS Property, Experimental, Reference
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.
576 border-block-start CSS, CSS Logical Property, CSS Property, Experimental, Reference
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.
577 border-block-start-color CSS, CSS Logical Property, CSS Property, Experimental, Reference
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.
578 border-block-start-style CSS, CSS Logical Property, CSS Property, Experimental, Reference
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.
579 border-block-start-width CSS, CSS Logical Property, CSS Property, Experimental, Reference
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.
580 border-bottom CSS, CSS Borders, CSS Property, Reference
The border-bottom CSS property is a shorthand that sets the values of border-bottom-color, border-bottom-style, and border-bottom-width. These properties describe an element's bottom border.
581 border-bottom-color CSS, CSS Borders, CSS Property, Reference
The border-bottom-color CSS property sets the color of an element's bottom border. Note that in many cases the shorthand CSS properties border-color or border-bottom are more convenient and preferable.
582 border-bottom-left-radius CSS, CSS Borders, CSS Property, NeedsMobileBrowserCompatibility, Reference
The border-bottom-left-radius CSS property sets the rounding of the bottom-left corner of the element.
583 border-bottom-right-radius CSS, CSS Borders, CSS Property, NeedsMobileBrowserCompatibility, Reference
The border-bottom-right-radius CSS property sets the rounding of the bottom-right corner of the element.
584 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.
585 border-bottom-width CSS, CSS Borders, CSS Property, Reference
The border-bottom-width CSS property sets the width of the bottom border of a box.
586 border-collapse CSS, CSS Borders, CSS Property, CSS Tables, Reference
The border-collapse CSS property specifies whether cells inside a <table> have shared or separate borders.
587 border-color CSS, CSS Borders, CSS Property, CSS Styles, HTML Colors, Reference, Styling HTML, border-color, borders, colors
The border-color CSS property is a shorthand property for setting the colors on all four sides of an element's border.
588 border-image CSS, CSS Borders, CSS Property, Reference
The border-image CSS property lets you draw an image in place of an element's border-style.
589 border-image-outset CSS, CSS Borders, CSS Property, Reference
The border-image-outset CSS property specifies the distance by which an element's border image is set out from its border box.
590 border-image-repeat CSS, CSS Borders, CSS Property, NeedsMobileBrowserCompatibility, 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.
591 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 are used to form the components of an element's border image.
592 border-image-source CSS, CSS Borders, CSS Property, Reference
The border-image-source CSS property specifies the source image used to create an element's border image.
593 border-image-width CSS, CSS Borders, CSS Property, Reference
The border-image-width CSS property specifies the width of an element's border image.
594 border-inline-end CSS, CSS Logical Property, CSS Property, Experimental, Reference
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.
595 border-inline-end-color CSS, CSS Logical Property, CSS Property, Experimental, Reference
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.
596 border-inline-end-style CSS, CSS Logical Property, CSS Property, Experimental, Reference
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.
597 border-inline-end-width CSS, CSS Logical Property, CSS Property, Experimental, Reference
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.
598 border-inline-start CSS, CSS Logical Property, CSS Property, Experimental, Reference
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.
599 border-inline-start-color CSS, CSS Logical Property, CSS Property, Experimental, Reference
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.
600 border-inline-start-style CSS, CSS Logical Property, CSS Property, Experimental, Reference
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.
601 border-inline-start-width CSS, CSS Logical Property, CSS Property, Experimental, Reference
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.
602 border-left CSS, CSS Borders, CSS Property, Reference
The border-left CSS property is a shorthand that sets the values of border-left-color, border-left-style, and border-left-width. These properties describe an element's left border.
603 border-left-color CSS, CSS Borders, CSS Property, Reference
The border-left-color CSS property sets the color of an element's left border. Note that in many cases the shorthand CSS properties border-color or border-left are more convenient and preferable.
604 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.
605 border-left-width CSS, CSS Borders, CSS Property, Reference
The border-left-width CSS property sets the width of the left border of a box.
606 border-radius CSS, CSS Borders, CSS Property, NeedsMobileBrowserCompatibility, Reference
The border-radius CSS property lets you round the corners of an element's outer border edge. You can specify a single radius to make circular corners, or two radii to make elliptical corners.
607 border-right CSS, CSS Borders, CSS Property, Reference
The border-right CSS property is a shorthand that sets the values of border-right-color, border-right-style, and border-right-width. These properties describe an element's right border.
608 border-right-color CSS, CSS Borders, CSS Property, Reference
The border-right-color CSS property sets the color of an element's right border. Note that in many cases the shorthand CSS properties  border-color or border-right are more convenient and preferable.
609 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.
610 border-right-width CSS, CSS Borders, CSS Property, Reference
The border-right-width CSS property sets the width of the right border of a box.
611 border-spacing CSS, CSS Property, CSS Tables, Reference
The border-spacing CSS property specifies the distance between the borders of adjacent <table> cells. This property applies only when border-collapse is separate.
612 border-style CSS, CSS Borders, CSS Property, Reference
The border-style CSS property is a shorthand property that sets the line style for all four sides of an element's border.
613 border-top CSS, CSS Borders, CSS Property, Reference
The border-top CSS property is a shorthand that sets the values of border-top-color, border-top-style, and border-top-width. These properties describe an element's top border.
614 border-top-color CSS, CSS Borders, CSS Property, Reference
The border-top-color CSS property sets the color of an element's top border. Note that in many cases the shorthand CSS properties border-color or border-top are more convenient and preferable.
615 border-top-left-radius CSS, CSS Borders, CSS Property, NeedsMobileBrowserCompatibility, Reference
The border-top-left-radius CSS property sets the rounding of the top-left corner of the element.
616 border-top-right-radius CSS, CSS Borders, CSS Property, NeedsMobileBrowserCompatibility, Reference
The border-top-right-radius CSS property sets the rounding of the top-right corner of the element.
617 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.
618 border-top-width CSS, CSS Borders, CSS Property, Reference
The border-top-width CSS property sets the width of the top border of a box.
619 border-width CSS, CSS Borders, CSS Property, Reference
The border-width CSS property is a shorthand property for setting the widths on all four sides of an element's border.
620 bottom CSS, CSS Positioning, CSS Property, Reference
The bottom CSS property participates in specifying the vertical position of a positioned element. It has no effect on non-positioned elements.
621 box-align CSS, CSS Property, NeedsBrowserCompatibility, NeedsMobileBrowserCompatibility, 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.
622 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.
623 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).
624 box-flex CSS, CSS Property, Non-standard, Reference
This is a property for controlling parts of the XUL box model. It does not match either the old CSS Flexible Box Layout Module drafts for 'box-flex' (which were based on this property) or the behavior of '-webkit-box-flex' (which is based on those drafts). See flexbox for information about the current standard.
625 box-flex-group CSS, CSS Property, NeedsBrowserCompatibility, NeedsMobileBrowserCompatibility, Non-standard, Reference
This is a property of the original CSS Flexible Box Layout Module draft, and has been replaced by a newer standard. See flexbox for information about the current standard.
626 box-lines CSS, CSS Property, NeedsBrowserCompatibility, NeedsMobileBrowserCompatibility, Non-standard, Reference
This is a property of the original CSS Flexible Box Layout Module draft, and has been replaced by a newer standard. See flexbox for information about the current standard.
627 box-ordinal-group CSS, CSS Property, NeedsBrowserCompatibility, NeedsMobileBrowserCompatibility, Non-standard, Reference
This is a property of the original CSS Flexible Box Layout Module draft, and has been replaced by a newer standard. See flexbox for information about the current standard.
628 box-orient CSS, Non-standard, Reference
This is a property of the original CSS Flexible Box Layout Module draft, and has been replaced by a newer standard. See flexbox for information about the current standard.
629 box-pack CSS, CSS Property, Non-standard, Reference
This is a property of the original CSS Flexible Box Layout Module draft, and has been replaced by a newer standard. See flexbox for information about the current standard.
630 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 is used to add shadow effects around an element's frame. You can specify multiple effects separated by commas if you wish to do so.
631 box-sizing CSS, CSS Property, Reference
The box-sizing CSS property defines how the user agent should calculate the total width and height of an element.
632 box-suppress CSS, CSS Display, CSS Property, Experimental, Graphics, Layout, NeedsExample, Non-standard, Reference, Web
The box-suppress CSS property controls the box generation of an element.
633 break-after CSS, CSS Fragmentation, CSS Multi-column Layout, CSS Property, NeedsExample, Reference
The break-after CSS property defines how page, column, or region breaks should behave after a generated box. If there is no generated box, the property is ignored.
634 break-before CSS, CSS Fragmentation, CSS Multi-column Layout, CSS Property, NeedsExample, Reference
The break-before CSS property defines how page, column, or region breaks should behave before a generated box. If there is no generated box, the property is ignored.
635 break-inside CSS, CSS Fragmentation, CSS Multi-column Layout, CSS Property, NeedsExample, Reference
The break-inside CSS property defines how page, column, or region breaks should behave inside a generated box. If there is no generated box, the property is ignored.
636 calc() CSS, CSS Function, Layout, Reference, Web
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.
637 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.
638 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 indicator of the point at which the next character typed by the user will be inserted—within an element such as <input> or one with the contenteditable attribute set.
639 clear CSS, CSS Positioning, CSS Property, Reference
The clear CSS property specifies whether an element can be next to floating elements that precede it or must be moved down (cleared) below them. The clear property applies to both floating and non-floating elements.
640 clip CSS, CSS Masking, CSS Property, Deprecated, 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.
641 clip-path CSS, CSS Masking, CSS Property, Experimental, Reference, Web
The clip-path CSS property creates a clipping region that defines what part of an element should be displayed. More specifically, those portions that are inside the region are shown, while those outside are hidden.
642 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 content and text decorations. It also sets the currentcolor value, which may be used as an indirect value on other properties, and is the default for other color properties, such as border-color.
643 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 gives the web author control over what if anything the user agent may do to optimize the appearance of the element on the output device.
644 column-count CSS, CSS Multi-column Layout, CSS Property, NeedsMobileBrowserCompatibility, Reference
The column-count CSS property breaks an element's content into the specified number of columns.
645 column-fill CSS, CSS Multi-column Layout, CSS Property, NeedsBrowserCompatibility, Reference
The column-fill CSS property controls how an element's contents are balanced when broken into columns.
646 column-gap (grid-column-gap) CSS, CSS Multi-column Layout, CSS Property, NeedsMobileBrowserCompatibility, Reference
The column-gap CSS property sets the size of the gap (gutter) between an element's columns.
647 column-rule CSS, CSS Multi-column Layout, CSS Property, NeedsMobileBrowserCompatibility, Reference
The column-rule CSS property sets the width, style, and color of the rule (line) drawn between columns in a multi-column layout.
648 column-rule-color CSS, CSS Multi-column Layout, CSS Property, HTML Colors, NeedsMobileBrowserCompatibility, Reference, Styles, Styling HTML, column-rule-color, columns
The column-rule-color CSS property sets the color of the rule (line) drawn between columns in a multi-column layout.
649 column-rule-style CSS, CSS Multi-column Layout, CSS Property, NeedsMobileBrowserCompatibility, Reference
The column-rule-style CSS property sets the style of the rule (line) drawn between columns in a multi-column layout.
650 column-rule-width CSS, CSS Multi-column Layout, CSS Property, NeedsMobileBrowserCompatibility, Reference
The column-rule-width CSS property sets the width of the rule (line) drawn between columns in a multi-column layout.
651 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.
652 column-width CSS, CSS Multi-column Layout, CSS Property, Reference
The column-width CSS property specifies the ideal column width in a multi-column layout. If the width of the container is narrower than the specified value, the actual column width may be smaller. The container will have as many columns as can fit without any of them having a width less than the column-width value.
653 columns CSS, CSS Multi-column Layout, CSS Property, Reference
The columns CSS property sets the column width and column count of an element.
654 contain CSS, CSS Containment, CSS Property, Experimental, 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.
655 content CSS, CSS Property, Generated Content, NeedsMobileBrowserCompatibility, Reference
The content CSS property is used with the ::before and ::after pseudo-elements to generate content in an element. Objects inserted using the content property are anonymous replaced elements.
656 counter-increment CSS, CSS Lists, CSS Property, NeedsMobileBrowserCompatibility, Reference
The counter-increment CSS property increases or decreases the value of a CSS counter by a given value.
657 counter-reset CSS, CSS Lists, CSS Property, NeedsMobileBrowserCompatibility, Reference
The counter-reset CSS property resets a CSS counter to a given value.
658 cursor CSS, CSS Property, Cursor, NeedsBrowserCompatibility, NeedsMobileBrowserCompatibility, Reference
The cursor CSS property specifies which mouse cursor to display when the mouse pointer is over an element.
659 direction BiDi, CSS, CSS Property, Reference
The direction CSS property sets the direction of text, table columns, and horizontal overflow.
660 display CSS, CSS Display, CSS Property
The display CSS property specifies the type of rendering box used for an element. In HTML, default display property values are taken from behaviors described in the HTML specifications or from the browser/user default stylesheet. The default value in XML is inline, including SVG elements.
661 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.
662 empty-cells CSS, CSS Property, CSS Tables, Reference
The empty-cells CSS property specifies how the user agent should render borders and backgrounds around <table> cells that have no visible content.
663 filter CSS, CSS Property, Reference, SVG, SVG Filter, filter
The filter CSS property lets you apply graphical effects like blurring or color shifting to an element. Filters are commonly used to adjust the rendering of images, backgrounds, and borders.
664 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)).
665 flex CSS, CSS Flexible Boxes, CSS Property, Reference
The flex CSS property specifies how a flex item will grow or shrink so as to fit the space available in its flex container. This is a shorthand property that sets flex-grow, flex-shrink, and flex-basis.
666 flex-basis CSS, CSS Flexible Boxes, CSS Property, NeedsMobileBrowserCompatibility, Reference
The flex-basis CSS property specifies the initial main size of a flex item. This property determines the size of the content-box unless specified otherwise using box-sizing.
667 flex-direction CSS, CSS Flexible Boxes, CSS Property, Reference
The flex-direction CSS property specifies how flex items are placed in the flex container defining the main axis and the direction (normal or reversed).
668 flex-flow CSS, CSS Flexible Boxes, CSS Property, Reference
The flex-flow CSS property is a shorthand property for flex-direction and flex-wrap individual properties.
669 flex-grow CSS, CSS Flexible Boxes, CSS Property, NeedsContent, Reference
The flex-grow CSS property specifies the flex grow factor of a flex item. It specifies what amount of space inside the flex container the item should take up. The flex grow factor of a flex item is relative to the size of the other children in the flex-container.
670 flex-shrink CSS, CSS Flexible Boxes, CSS Property, NeedsContent, Reference
The flex-shrink CSS property specifies the flex shrink factor of a flex item. Flex items will shrink to fill the container according to the flex-shrink number, when the default size of flex items is larger than the flex container.
671 flex-wrap CSS, CSS Flexible Boxes, CSS Property, Reference
The CSS flex-wrap property specifies whether flex items are forced into a single line or can be wrapped onto multiple lines. If wrapping is allowed, this property also enables you to control the direction in which lines are stacked.
672 float CSS, CSS Positioning, CSS Property, Reference
The float CSS property specifies that an element should be placed along the left or right side of its container, allowing text and inline elements to wrap around it. The element is removed from the normal flow of the web page, though still remaining a part of the flow (in contrast to absolute positioning).
673 font CSS, CSS Fonts, CSS Property, Reference
The font CSS property is either a shorthand property for setting font-style, font-variant, font-weight, font-size, line-height, and font-family; or a way to set the element's font to a system font, using specific keywords.
674 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.
675 font-feature-settings CSS, CSS Fonts, CSS Property, Reference
The font-feature-settings CSS property gives you control over advanced typographic features in OpenType fonts.
676 font-kerning CSS, CSS Fonts, CSS Property, Reference
The font-kerning CSS property controls the usage of the kerning information stored in a font.
677 font-language-override CSS, CSS Fonts, CSS Property, Reference
The font-language-override CSS property controls the usage of language-specific glyphs in a typeface.
678 font-optical-sizing CSS, CSS Fonts, CSS Property, NeedsExample, Reference
The font-optical-sizing CSS property allows developers to control whether browsers render text with slightly differing visual representations to optimize viewing at different sizes, or not. This only works for fonts that have an optical size variation axis.
679 font-size CSS, CSS Fonts, CSS Property, Reference
The font-size CSS property specifies the size of the font. Setting this property may change the size of other items, too, since it is used to compute the value of em, ex, and various other relative <length> units.
680 font-size-adjust CSS, CSS Fonts, CSS Property, NeedsMobileBrowserCompatibility, Reference
The font-size-adjust CSS property specifies that the font size should be chosen based on the height of lowercase letters rather than the height of capital letters. This is useful since the legibility of fonts, especially at small sizes, is determined more by the size of lowercase letters than by the size of capital letters.
681 font-smooth CSS, CSS Property, Non-standard, Reference
The font-smooth CSS property controls the application of anti-aliasing when fonts are rendered.
682 font-stretch CSS, CSS Fonts, CSS Property, Reference
The font-stretch CSS property selects a normal, condensed, or expanded face from a font.
683 font-style CSS, CSS Fonts, CSS Property, Reference, Web, font
The font-style CSS property specifies whether a font should be styled with a normal, italic, or oblique face from its font-family.
684 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.
685 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.
686 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.
687 font-variant-caps CSS, CSS Fonts, CSS Property, Reference
The font-variant-caps CSS property controls the usage of alternate glyphs for capital letters.
688 font-variant-east-asian CSS, CSS Fonts, CSS Property, NeedsLiveSample, Reference
The font-variant-east-asian CSS property controls the usage of alternate glyphs for East Asian scripts, like Japanese and Chinese.
689 font-variant-ligatures CSS, CSS Fonts, CSS Property, NeedsLiveSample, 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.
690 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.
691 font-variant-position CSS, CSS Fonts, CSS Property, Reference
The font-variant-position CSS property controls the usage of alternate, smaller glyphs that are positioned as superscript or subscript relative to the baseline of the font (which remains unchanged). These glyphs are likely to be used in <sub> and <sup> elements.
692 font-variation-settings CSS, CSS Fonts, CSS Property, NeedsExample, Non-standard, Reference
The font-variation-settings CSS property provides low-level control over OpenType or TrueType font variations, by specifying the four letter axis names of the features you want to vary, along with their variation values.
693 font-weight CSS, CSS Fonts, CSS Property, Reference
The font-weight CSS property specifies the weight (or boldness) of the font. The font weights available to you will depend on the font-family you are using. Some fonts are only available in normal and bold.
694 gap (grid-gap)
The gap CSS property specifies the gaps (gutters) between rows and columns. It is a shorthand for row-gap and column-gap.
695 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.
696 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 row by contributing a line, a span, or nothing (automatic) to its grid placement, thereby specifying the edges of its grid area.
697 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.
698 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.
699 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.
700 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.
701 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.
702 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.
703 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.
704 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.
705 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.
706 grid-template CSS, CSS Grid, CSS Property, Reference
The grid-template CSS property is a shorthand property for defining grid columns, rows, and areas.
707 grid-template-areas CSS, CSS Grid, CSS Property, Reference
The grid-template-areas CSS property specifies named grid areas.
708 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.
709 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.
710 hanging-punctuation CSS, CSS Property, CSS Text, NeedsBrowserCompatibility, Non-standard, Reference
The hanging-punctuation CSS property specifies whether a punctuation mark should hang at the start or end of a line of text. Hanging punctuation may be placed outside the line box.
711 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.
712 hyphens CSS, CSS Property, CSS Text, Reference
The hyphens CSS property specifies how words should be hyphenated when text wraps across multiple lines. You can prevent hyphenation entirely, use hyphenation in manually-specified points within the text, or let the browser automatically insert hyphens where appropriate.
713 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.
714 image-rendering CSS, CSS Images, CSS Property, Experimental, Reference, SVG
The image-rendering CSS property indicates the algorithm to use when scaling images. When applied to an element, the property applies to the element itself, to any images supplied in its other properties, and to its descendant elements.
715 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.
716 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.
717 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. It can be applied to any CSS property.
718 initial-letter CSS, CSS Inline, CSS Property, Experimental, Graphics, Layout, Reference, Web
The initial-letter CSS property specifies styling for dropped, raised, and sunken initial letters.
719 initial-letter-align CSS, CSS Inline, CSS Property, Experimental, Graphics, Layout, NeedsLiveSample, Reference, Web
The initial-letter-align CSS property specifies the alignment of initial letters within a paragraph.
720 inline-size CSS, CSS Logical Property, CSS Property, Experimental, 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.
721 isolation CSS, CSS Property, Compositing and Blending
The isolation CSS property determines whether an element must create a new stacking context.
722 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 their container.
723 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.
724 justify-self CSS, CSS Box Alignment, CSS Property, Reference
The CSS justify-self property defines the way of justifying a box inside its container along the appropriate axis.
725 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.
726 letter-spacing CSS, CSS Property, CSS Text, Reference, SVG
The letter-spacing CSS property specifies the spacing behavior between text characters.
727 line-break CSS, CSS Property, CSS Text, NeedsExample, Reference
The line-break CSS property is used to specify how (or if) to break lines when working with punctuation and symbols. This only affects text in Chinese, Japanese, or Korean (CJK).
728 line-height CSS, CSS Fonts, CSS Property, Reference
The line-height CSS property sets the amount of space used for lines, such as in text. On block-level elements, it specifies the minimum height of line boxes within the element. On non-replaced inline elements, it specifies the height that is used to calculate line box height.
729 line-height-step CSS, CSS Fonts, CSS Property, Reference
The line-height-step CSS property defines the step units for line box heights. When the step unit is positive, line box heights are rounded up to the closest multiple of the unit. Negative values are invalid.
730 linear-gradient() CSS, CSS Function, CSS Images, Graphics, Layout, NeedsNewCompatTable, Reference, Web
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>.
731 list-style CSS, CSS Lists, CSS Property, Reference
The list-style CSS property is a shorthand for setting the individual values that define how a list is displayed: list-style-type, list-style-image, and list-style-position.
732 list-style-image CSS, CSS Lists, CSS Property, Reference
The list-style-image CSS property specifies an image to be used as the list item marker. It is often more convenient to use the shorthand list-style.
733 list-style-position CSS, CSS Lists, CSS Property, Reference
The list-style-position CSS property specifies the position of the ::marker relative to a list item.
734 list-style-type CSS, CSS Lists, CSS Property, Reference
The list-style-type CSS property specifies the appearance of a list item element.
735 margin CSS, CSS Property, Reference
The margin CSS property sets the margin area on all four sides of an element. It is a shorthand for setting all individual margins at once: margin-top, margin-right, margin-bottom, and margin-left.
736 margin-block-end CSS, CSS Logical Property, CSS Property, Experimental, NeedsContent, Reference
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.
737 margin-block-start CSS, CSS Logical Property, CSS Property, Experimental, NeedsContent, Reference
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.
738 margin-bottom CSS, CSS Property, Reference
The margin-bottom CSS property sets the margin area on the bottom of an element. A positive value will place it farther than normal from its neighbors, while a negative value will place it closer.
739 margin-inline-end CSS, CSS Logical Property, CSS Property, Experimental, NeedsContent, Reference
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.
740 margin-inline-start CSS, CSS Logical Property, CSS Property, Experimental, Reference
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.
741 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 will place it farther than normal from its neighbors, while a negative value will place it closer.
742 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 will place it farther than normal from its neighbors, while a negative value will place it closer.
743 margin-top CSS, CSS Property, Reference
The margin-top CSS property sets the margin area on the top of an element. A positive value will place it farther than normal from its neighbors, while a negative value will place it closer.
744 mask CSS, CSS Masking, CSS Property, Layout, Reference, SVG, Web
The mask CSS property alters the visibility of an element by either partially or fully hiding it. This is accomplished by either masking or clipping the image at specific points.
745 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.
746 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.
747 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.
748 mask-border-repeat CSS, CSS Masking, CSS Property, Experimental, NeedsCompatTable, NeedsExample, Reference
The mask-border-repeat CSS property defines how the edge regions of a source image are adjusted to fit the dimensions of an element's mask border.
749 mask-border-slice CSS, CSS Masking, CSS Property, Experimental, NeedsCompatTable, NeedsExample, Reference
The mask-border-slice CSS property divides the image specified by mask-border-source into regions. These regions are used to form the components of an element's mask border.
750 mask-border-source CSS, CSS Masking, CSS Property, Experimental, NeedsCompatTable, NeedsExample, Reference
The mask-border-source CSS property specifies the source image used to create an element's mask border.
751 mask-border-width CSS, CSS Masking, CSS Property, Experimental, NeedsCompatTable, NeedsExample, Reference
The mask-border-width CSS property specifies the width of an element's mask border.
752 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.
753 mask-composite CSS, CSS Masking, CSS Property, Experimental, NeedsBrowserCompatibility, NeedsMobileBrowserCompatibility, Reference
The mask-composite CSS property represents a compositing operation used on the current mask layer with the mask layers below it.
754 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.
755 mask-mode CSS, CSS Masking, CSS Property, Experimental, Reference
The mask-mode CSS property determines whether the mask reference defined by mask-image is treated as a luminance or alpha mask.
756 mask-origin CSS, CSS Masking, CSS Property, Experimental, Reference
The mask-origin CSS property determines the origin of a mask.
757 mask-position CSS, CSS Masking, CSS Property, Experimental, Reference
The mask-position CSS property sets the initial position, relative to the mask position layer defined by mask-origin, for each defined mask image.
758 mask-repeat CSS, CSS Masking, CSS Property, Experimental, NeedsBrowserCompatibility, NeedsMobileBrowserCompatibility, Reference
The mask-repeat CSS property defines 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.
759 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.
760 mask-type CSS, CSS Masking, CSS Property, Reference, SVG
The mask-type CSS property determines whether the mask defined by an SVG <mask> element is used as a luminance or an alpha mask. It applies to the <mask> element itself.
761 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.
762 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.
763 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.
764 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.
765 min-block-size CSS, CSS Logical Property, CSS Property, Experimental, Reference
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.
766 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.
767 min-inline-size CSS, CSS Logical Property, CSS Property, Experimental, Reference
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.
768 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.
769 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.
770 mix-blend-mode CSS, CSS Property, Compositing and Blending
The mix-blend-mode CSS property describes how an element's content should blend with the content of the element's direct parent and the element's background.
771 object-fit CSS, CSS Images, CSS Property, Layout, Reference, css layout, object-fit, size
The object-fit CSS property specifies how the contents of a replaced element, such as an <img> or <video>, should be resized to fit its container.
772 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.
773 offset CSS, CSS Motion, CSS Property, Draft, Experimental, NeedsContent, Non-standard, Reference
The offset CSS property is a shorthand property for animating an element along a defined path.
774 offset-block-end CSS, CSS Logical Property, CSS Property, Experimental, NeedsContent, Reference
The offset-block-end CSS property defines the logical block end offset of an element, which maps to a physical offset depending on the element's writing mode, directionality, and text orientation. It corresponds to the top, right, bottom, or left property depending on the values defined for writing-mode, direction, and text-orientation.
775 offset-block-start CSS, CSS Logical Property, CSS Property, Experimental, NeedsContent, Reference
The offset-block-start CSS property defines the logical block start offset of an element, which maps to a physical offset depending on the element's writing mode, directionality, and text orientation. It corresponds to the top, right, bottom, or left property depending on the values defined for writing-mode, direction, and text-orientation.
776 offset-distance CSS, Draft, NeedsContent, NeedsLiveSample, Reference, motion-offset, offset-distance
The offset-distance CSS property specifies a position along an offset-path.
777 offset-inline-end CSS, CSS Logical Property, CSS Property, Experimental, NeedsContent, Reference
The offset-inline-end CSS property defines the logical inline end offset of an element, which maps to a physical offset depending on the element's writing mode, directionality, and text orientation. It corresponds to the top, right, bottom, or left property depending on the values defined for writing-mode, direction, and text-orientation.
778 offset-inline-start CSS, CSS Logical Property, CSS Property, Experimental, NeedsContent, Reference
The offset-inline-start CSS property defines the logical inline start offset of an element, which maps to a physical offset depending on the element's writing mode, directionality, and text orientation. It corresponds to the top, right, bottom, or left property depending on the values defined for writing-mode, direction, and text-orientation.
779 offset-path CSS, Reference, motion-path, offset-path
The offset-path CSS property specifies the offset path where the element gets positioned. The exact element’s position on the offset path is determined by the offset-distance property. An offset path is either a specified path with one or multiple sub-paths or the geometry of a not-styled basic shape. Each shape or path must define an initial position for the computed value of "0" for offset-distance and an initial direction which specifies the rotation of the object to the initial position.
780 offset-rotate Draft, NeedsContent, NeedsLiveSample, offset-rotate
The offset-rotate CSS property defines the direction of the element while positioning along the offset path.
781 opacity CSS, CSS Property, Reference
The opacity CSS property specifies the level of transparency of an element, that is, the degree to which the content behind the element is visible.
782 order CSS, CSS Flexible Boxes, CSS Property, Reference
The order CSS property specifies the order used to lay out a flex or grid item in its flex or grid container. Items within the same container are laid out in ascending order according to their order values. Elements with the same order value are laid out in the order in which they appear in the source code.
783 orphans CSS, CSS Fragmentation, CSS Multi-column Layout, CSS Property, Reference
The orphans CSS property specifies the minimum number of lines in a block container that must be shown at the bottom of a page, region, or column. This property is normally used to control how breaks occur.
784 outline CSS, CSS Outline, CSS Property, Layout, Reference
The outline CSS property is a shorthand for setting various outline properties in a single declaration: outline-style, outline-width, and outline-color.
785 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.
786 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.
787 outline-style CSS, CSS Outline, CSS Property, NeedsBrowserCompatibility, NeedsMobileBrowserCompatibility, 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.
788 outline-width CSS, CSS Outline, CSS Property, Layout, Reference
The outline-width CSS property sets the width (thickness) of an element's outline. An outline is a line that is drawn around an element, outside the border.
789 overflow CSS, CSS Box Model, CSS Property, Layout, Reference, overflow
The overflow CSS property specifies what to do when an element's content is too large to fit in its block formatting context. It is a shorthand for the overflow-x and overflow-y properties.
790 overflow-wrap CSS, CSS Property, CSS Text, Reference
The overflow-wrap CSS property specifies whether or not the browser should insert line breaks within words to prevent text from overflowing its content box.
791 overflow-x CSS, CSS Box Model, CSS Property, Reference
The overflow-x CSS property specifies whether to clip content, render a scroll bar, or display overflow content of a block-level element, when it overflows at the left and right edges.
792 overflow-y CSS, CSS Box Model, CSS Property, Reference
The overflow-y CSS property specifies whether to clip content, render a scroll bar, or display overflow content of a block-level element, when it overflows at the top and bottom edges.
793 overscroll-behavior CSS, CSS Box Model, CSS Property, Non-standard, Reference, overscroll-behavior
The overscroll-behavior CSS property is shorthand for the overscroll-behavior-x and overscroll-behavior-y properties, which allow you to control the browser's scroll overflow behavior — what happens when the boundary of a scrolling area is reached.
794 overscroll-behavior-x CSS, CSS Box Model, CSS Property, Non-standard, Reference, overscroll-behavior-x
The overscroll-behavior-x CSS property is allows you to control the browser's scroll overflow behavior — what happens when the boundary of a scrolling area is reached — in the x axis direction.
795 overscroll-behavior-y CSS, CSS Box Model, CSS Property, Non-standard, Reference, overscroll-behavior-y
The overscroll-behavior-y CSS property is allows you to control the browser's scroll overflow behavior — what happens when the boundary of a scrolling area is reached — in the y axis direction.
796 padding CSS, CSS Padding, CSS Property, NeedsMobileBrowserCompatibility, Reference
The padding CSS property sets the padding area on all four sides of an element. It is a shorthand for setting all individual paddings at once: padding-top, padding-right, padding-bottom, and padding-left.
797 padding-block-end CSS, CSS Logical Property, CSS Property, Experimental, Reference
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.
798 padding-block-start CSS, CSS Logical Property, CSS Property, Experimental, Reference
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.
799 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.
800 padding-inline-end CSS, CSS Logical Property, CSS Property, Experimental, Reference
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.
801 padding-inline-start CSS, CSS Logical Property, CSS Property, Experimental, Reference
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.
802 padding-left CSS, CSS Padding, CSS Property, Reference
The padding-left CSS property sets the width of the padding area on the left side of an element.
803 padding-right CSS, CSS Padding, CSS Property, Reference
The padding-right CSS property sets the width of the padding area on the right side of an element.
804 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.
805 page-break-after CSS, CSS Property, Page Breaks, Reference
The page-break-after CSS property adjusts page breaks after the current element.
806 page-break-before CSS, CSS Property, Page Breaks, Reference
The page-break-before CSS property adjusts page breaks before the current element.
807 page-break-inside CSS, CSS Property, Page Breaks, Reference
The page-break-inside CSS property adjusts page breaks inside the current element.
808 paint-order CSS, 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.
809 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. Each 3D element with z>0 becomes larger; each 3D-element with z<0 becomes smaller. The strength of the effect is determined by the value of this property.
810 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.
811 place-content CSS, CSS Box Alignment, CSS Property, Reference
The place-content CSS shorthand property sets both the align-content and justify-content properties.
812 place-items CSS, CSS Flexible Boxes, CSS Grid, CSS Property, Reference
The CSS place-items shorthand property sets both the align-items and justify-items properties. The first value is the align-items property value, the second the justify-items one. If the second value is not present, the first value is also used for it.
813 place-self CSS, CSS Box Alignment, CSS Property, Reference
The place-self CSS property 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.
814 pointer-events CSS, CSS Property, Reference, SVG
The pointer-events CSS property specifies under what circumstances (if any) a particular graphic element can become the target of mouse events.
815 position CSS, CSS Positioning, CSS Property, Reference
The position CSS property specifies how an element is positioned in a document. The top, right, bottom, and left properties determine the final location of positioned elements.
816 quotes CSS, CSS Property, Generated Content, Layout, Reference, Web
The quotes CSS property indicates how user agents should render quotation marks.
817 radial-gradient() CSS, CSS Function, CSS Images, Graphics, Layout, Reference, Web
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>.
818 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.
819 repeating-linear-gradient() CSS, CSS Function, CSS Images, 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>.
820 repeating-radial-gradient() CSS, CSS Function, CSS Images, Graphics, Layout, NeedsBrowserCompatibility, 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. The function's result is an object of the <gradient> data type, which is a special kind of <image>.
821 resize Basic User Interface, CSS, CSS Property, Reference
The resize CSS property sets whether an element is resizable, and if so, in which direction(s).
822 revert CSS, CSS Cascade, CSS Value, Layout, Reference
The revert CSS keyword rolls back the cascade so that a property takes on the value it would have had if there were no styles in the current style origin (author, user, or user-agent).
823 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.
824 rotate CSS, CSS Property, Reference, Transforms
The rotate CSS property allows you to specify rotation 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.
825 row-gap (grid-row-gap)
The row-gap CSS property sets the size of the gap (gutter) between an element's rows.
826 ruby-align CSS, CSS Property, CSS Ruby, Reference
The ruby-align CSS property defines the distribution of the different ruby elements over the base.
827 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).
828 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.
829 scroll-behavior CSS, CSS Property, CSSOM View, Reference
The scroll-behavior CSS property specifies the scrolling behavior for a scrolling box when scrolling is triggered by one of the navigation or CSSOM scrolling APIs.
830 scroll-snap-coordinate CSS, CSS Property, CSS Scroll Snap, Experimental, 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.
831 scroll-snap-destination CSS, CSS Property, CSS Scroll Snap, Experimental, 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.
832 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.
833 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.
834 scroll-snap-type CSS, CSS Property, CSS Scroll Snap, Experimental, Reference
The scroll-snap-type CSS property defines how strictly snap points are enforced on the scroll container in case there is one.
835 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.
836 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.
837 shape-image-threshold Boundaries, CSS, CSS Property, CSS Shapes, Float Area, Opacity, Property, Reference, Shape, shape-image-threshold
The shape-image-threshold CSS property defines the alpha channel threshold used to extract the shape using an image as the value for shape-outside.
838 shape-margin Boundaries, CSS, CSS Property, CSS Shapes, Float Area, Property, Reference, Shape, float, margin, shape-margin
The shape-margin CSS property specifies a margin for a CSS shape created using shape-outside.
839 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
840 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.
841 tab-size CSS, CSS Property, CSS Text, Experimental, Reference
The tab-size CSS property is used to customize the width of a tab (U+0009) character.
842 table-layout CSS, CSS Property, CSS Tables, Reference
The table-layout CSS property specifies the algorithm used to lay out <table> cells, rows, and columns.
843 text-align CSS, CSS Property, CSS Text, Reference
The text-align CSS property describes how inline content like text is aligned in its parent block element. text-align does not control the alignment of block elements, only their inline content.
844 text-align-last CSS, CSS Property, CSS Text, Experimental, Reference
The text-align-last CSS property describes how the last line of a block or a line, right before a forced line break, is aligned.
845 text-combine-upright CSS, CSS Property, CSS Writing Modes, Experimental, Reference
The text-combine-upright CSS property specifies the combination of multiple characters into the space of a single character. If the combined text is wider than 1em, the user agent must fit the contents within 1em. The resulting composition is treated as a single upright glyph for layout and decoration. This property only has an effect in vertical writing modes.
846 text-decoration CSS, CSS Property, CSS Text Decoration, NeedsMobileBrowserCompatibility, Reference
The text-decoration CSS property specifies the appearance of decorative lines used on text. It is a shorthand for setting one or more individual text-decoration values in a single declaration, which include text-decoration-line, text-decoration-color, and text-decoration-style.
847 text-decoration-color CSS, CSS Property, CSS Text, CSS Text Decoration, HTML Colors, HTML Styles, Reference, Styling HTML, Styling text, colors, text-decoration-color
The text-decoration-color CSS property sets the color of the decorative additions to text that are specified by text-decoration-line; these include underlines and overlines, strikethroughs, and wavy lines like those typically used to indicate content is misspelled (for example). The specified color applies to all such decorative lines in the scope of the property's value.
848 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.
849 text-decoration-skip CSS, CSS Property, CSS Text Decoration, Experimental, Layout, Reference, Web
The text-decoration-skip CSS property specifies what parts of an element’s content any text decoration affecting the element must skip over.
850 text-decoration-skip-ink CSS, CSS Property, CSS Text Decoration, Experimental, Layout, Reference, Web
The text-decoration-skip-ink CSS property specifies how overlines and underlines are drawn when they pass over glyph ascenders and descenders.
851 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 specified; there is no way to define different styles for each of the lines defined by text-decoration-line.
852 text-emphasis CSS, CSS Property, CSS Text Decoration, Reference
The text-emphasis CSS property is a shorthand property for setting text-emphasis-style and text-emphasis-color in one declaration. This property will apply the specified emphasis mark to each character of the element's text, except separator characters, like spaces,  and control characters.
853 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 defines the color used to draw emphasis marks on text being rendered in the HTML document. This value can also be set and reset using the text-emphasis shorthand.
854 text-emphasis-position CSS, CSS Property, CSS Text Decoration, Reference
The text-emphasis-position CSS property describes where emphasis marks are drawn at. The effect of emphasis marks on the line height is the same as for ruby text: if there isn't enough place, the line height is increased.
855 text-emphasis-style CSS, CSS Property, CSS Text Decoration, Reference
The text-emphasis-style CSS property defines the type of emphasis used. It can also be set, and reset, using the text-emphasis shorthand.
856 text-indent CSS, CSS Property, CSS Text, Layout, Reference
The text-indent CSS property specifies the amount of indentation (empty space) that is put before lines of text in a block. By default, this controls the indentation of only the first formatted line of the block, but the hanging and each-line keywords can be used to change this behavior.
857 text-justify CSS, CSS Property, CSS Text, Reference, text-justify
The text-justify CSS property defines what type of justification should be applied to text when it is justified (i.e., when text-align: justify; is set on it).
858 text-orientation CSS, CSS Property, CSS Writing Modes, Experimental, Reference
The text-orientation CSS property defines the orientation of the text characters in a line. This property only has an effect in vertical mode, that is, when writing-mode is not horizontal-tb. It is useful for controlling the display of languages that use vertical script, and also for making vertical table headers.
859 text-overflow CSS, CSS Property, Reference
The text-overflow CSS property determines how overflowed content that is not displayed is signaled to users. It can be clipped, display an ellipsis ('…', U+2026 Horizontal Ellipsis), or display a custom string.
860 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.
861 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.
862 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.
863 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.
864 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.
865 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.
866 touch-action CSS, CSS Property, NeedsLiveSample, Pointer Events, Reference
The touch-action CSS property specifies whether, and in what ways, a given region can be manipulated by the user via a touchscreen (for instance, by panning or zooming features built into the browser).
867 transform CSS, CSS Property, Reference, Transforms
The transform CSS property lets you rotate, scale, skew, or translate a given element. This is achieved by modifying the coordinate space of the CSS visual formatting model.
868 transform-box CSS, CSS Property, CSS Transforms, Experimental, NeedsBrowserCompatibility, NeedsExample, Reference
The transform-box CSS property defines the layout box to which the transform and transform-origin properties relate.
869 transform-origin CSS, CSS Property, CSS Transforms, Experimental, Reference
The transform-origin CSS property sets the origin for an element's transformations.
870 transform-style CSS, CSS Property, CSS Transforms, Experimental, Reference
The transform-style CSS property determines if the children of an element are positioned in the 3D-space or are flattened in the plane of the element.
871 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.
872 transition-delay CSS, CSS Property, CSS Transitions, Reference
The transition-delay CSS property specifies the amount of time to wait before starting a property's transition effect when its value changes.
873 transition-duration CSS, CSS Property, CSS Transitions, Reference
The transition-duration CSS property specifies the number of seconds or milliseconds a transition animation should take to complete. By default, the value is 0s, meaning that no animation will occur.
874 transition-property CSS, CSS Property, CSS Transitions, Reference
The transition-property CSS property specifies the CSS properties to which a transition effect should be applied.
875 transition-timing-function CSS, CSS Property, CSS Transitions, Reference
The transition-timing-function CSS property is used to describe how the intermediate values of the CSS properties being affected by a transition effect are calculated.
876 translate CSS, CSS Property, Non-standard, Reference, Transforms
The translate CSS property allows you to specify translation 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.
877 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.
878 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.
879 user-select CSS, CSS Property, Experimental, Reference
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.
880 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.
881 vertical-align CSS, CSS Property, Reference
The vertical-align CSS property specifies the vertical alignment of an inline or table-cell box.
882 visibility CSS, CSS Box Model, CSS Property, Layout, Reference, Web
The visibility CSS property can show or hide an element without affecting the layout of a document (i.e., space is created for elements regardless of whether they are visible or not). The property can also hide rows or columns in a <table>.
883 white-space CSS, CSS Property, CSS Text, Reference
The white-space CSS property determines how whitespace inside an element is handled.
884 widows CSS, CSS Fragmentation, CSS Multi-column Layout, CSS Property, Reference
The widows CSS property specifies the minimum number of lines in a block container that must be shown at the top of a page, region, or column. This property is normally used to control how breaks occur.
885 width CSS, CSS Property, Reference, dimensions, size, width
The width CSS property specifies the width of an element. By default, the property defines the width of the content area. If box-sizing is set to border-box, however, it instead determines the width of the border area.
886 will-change CSS, CSS Property, CSS Will-change, Performance, Reference, Transitions
The will-change CSS property provides a way for authors to hint browsers about the kind of changes to be expected on an element, so that the browser can set up appropriate optimizations ahead of time before the element is actually changed.
887 word-break CSS, CSS Property, Reference
The word-break CSS property specifies whether or not the browser should insert line breaks wherever the text would otherwise overflow its content box.
888 word-spacing CSS, CSS Property, CSS Text, Reference
The word-spacing CSS property specifies the spacing behavior between tags and words.
889 writing-mode CSS, CSS Property, Layout, Reference
The writing-mode CSS property defines whether lines of text are laid out horizontally or vertically, as well as the direction in which blocks progress.
890 z-index CSS, CSS Property, Reference
The z-index CSS property specifies the z-order of a positioned element and its descendants. When elements overlap, z-order determines which one covers the other. An element with a larger z-index generally covers an element with a lower one.
891 zoom CSS, CSS Property, Non-standard, Reference
The non-standard zoom CSS property can be used to control the magnification level of an element.

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Contributors to this page: Sebastianz, fscholz
Last updated by: Sebastianz,