overflow

The overflow CSS property sets what to do when an element's content is too big to fit in its block formatting context. It is a shorthand for overflow-x and overflow-y.

The options include clipping, showing scrollbars, or displaying the content flowing out of its container into the surrounding area.

Specifying a value other than visible (the default) creates a new block formatting context. This is necessary for technical reasons — if a float intersected with the scrolling element it would forcibly rewrap the content after each scroll step, leading to a slow scrolling experience.

In order for overflow to have an effect, the block-level container must have either a set height (height or max-height) or white-space set to nowrap.

Note: Setting one axis to visible (the default) while setting the other to a different value results in visible behaving as auto.

Note: The JavaScript Element.scrollTop property may be used to scroll an HTML element even when overflow is set to hidden.

Syntax

/* Keyword values */
overflow: visible;
overflow: hidden;
overflow: clip;
overflow: scroll;
overflow: auto;
overflow: hidden visible;

/* Global values */
overflow: inherit;
overflow: initial;
overflow: unset;

The overflow property is specified as one or two keywords chosen from the list of values below. If two keywords are specified, the first applies to overflow-x and the second to overflow-y. Otherwise, both overflow-x and overflow-y are set to the same value.

Values

visible: Content is not clipped and may be rendered outside the padding box.
hidden: Content is clipped if necessary to fit the padding box. No scrollbars are provided, and no support for allowing the user to scroll (such as by dragging or using a scroll wheel) is allowed. The content can be scrolled programmatically (for example, by setting the value of a property such as offsetLeft), so the element is still a scroll container.
clip: Like for hidden, the content is clipped to the element's padding box. The difference between clip and hidden is that the clip keyword also forbids all scrolling, including programmatic scrolling. The box is not a scroll container, and does not start a new formatting context. If you wish to start a new formatting context, you can use display: flow-root to do so.
scroll: Content is clipped if necessary to fit the padding box. Browsers always display scrollbars whether or not any content is actually clipped, preventing scrollbars from appearing or disappearing as content changes. Printers may still print overflowing content.
auto: Depends on the user agent. If content fits inside the padding box, it looks the same as visible, but still establishes a new block formatting context. Desktop browsers provide scrollbars if content overflows.

overlay: Behaves the same as auto, but with the scrollbars drawn on top of content instead of taking up space. Only supported in WebKit-based (e.g., Safari) and Blink-based (e.g., Chrome or Opera) browsers.

Mozilla extensions

-moz-scrollbars-none [1]: Use overflow: hidden instead.
-moz-scrollbars-horizontal [1]: Use overflow-x: scroll and overflow-y: hidden, or overflow: hidden scroll instead.
-moz-scrollbars-vertical [1]: Use overflow-x: hidden and overflow-y: scroll, or overflow: scroll hidden instead.
-moz-hidden-unscrollable: Intended mainly for internal use and by themes. Disables scrolling of XML root elements, <html>, and <body> with the keyboard's arrow keys and the mouse wheel.

[1] As of Firefox 63, this feature is behind a feature preference setting. In about:config, set layout.css.overflow.moz-scrollbars.enabled to true

Formal syntax

[ visible | hidden | clip | scroll | auto ]{1,2}

Examples

p {
  width: 12em;
  height: 6em;
  border: dotted;
  overflow: visible; /* content is not clipped */ 
}

visible (default)
Sed ut perspiciatis unde omnis iste natus error sit voluptatem accusantium doloremque laudantium.

p { overflow: hidden; /* no scrollbars are provided */ }

overflow: hidden
Sed ut perspiciatis unde omnis iste natus error sit voluptatem accusantium doloremque laudantium.

p { overflow: scroll; /* always show scrollbars */ }

overflow: scroll
Sed ut perspiciatis unde omnis iste natus error sit voluptatem accusantium doloremque laudantium.

p { overflow: auto; /* append scrollbars if necessary */ }

overflow: auto
Sed ut perspiciatis unde omnis iste natus error sit voluptatem accusantium doloremque laudantium.

Specifications

Specification	Status	Comment
CSS Overflow Module Level 3 The definition of 'overflow' in that specification.	Working Draft	Changed syntax to allow one or two keywords instead of only one
CSS Basic Box Model The definition of 'overflow' in that specification.	Working Draft	No change.
CSS Level 2 (Revision 1) The definition of 'overflow' in that specification.	Recommendation	Initial definition.

Initial value	`visible`
Applies to	Block-containers, flex containers, and grid containers
Inherited	no
Media	visual
Computed value	as specified
Animation type	discrete
Canonical order	the unique non-ambiguous order defined by the formal grammar

Browser compatibility

Update compatibility data on GitHub

	Desktop						Mobile
	Chrome	Edge	Firefox	Internet Explorer	Opera	Safari	Android webview	Chrome for Android	Edge Mobile	Firefox for Android	Opera for Android	Safari on iOS	Samsung Internet
`overflow`	Chrome Full support 1	Edge Full support 12	Firefox Full support 1 Notes Full support 1 Notes Notes After Firefox 3.6, the `overflow` property is correctly applied to table group elements (`<thead>`, `<tbody>`, `<tfoot>`).	IE Full support 4 Notes Full support 4 Notes Notes From version 4 to 6, Internet Explorer enlarges an element with `overflow: visible` (default value) to fit the content inside it. `height` and `width` behave like `min-height` and `min-width`, respectively.	Opera Full support 7	Safari Full support 1	WebView Android ?	Chrome Android ?	Edge Mobile Full support Yes	Firefox Android Full support 4	Opera Android ?	Safari iOS ?	Samsung Internet Android ?
Multiple keyword syntax for `overflow-x` and `overflow-y` Experimental	Chrome Full support 68	Edge No support No	Firefox Full support 61	IE No support No	Opera Full support 55	Safari No support No	WebView Android Full support 68	Chrome Android Full support 68	Edge Mobile No support No	Firefox Android Full support 61	Opera Android Full support 55	Safari iOS No support No	Samsung Internet Android No support No

Legend

Full support: Full support
No support: No support
Compatibility unknown: Compatibility unknown
Experimental. Expect behavior to change in the future.: Experimental. Expect behavior to change in the future.
See implementation notes.: See implementation notes.

overflow

Syntax

Values

Mozilla extensions

Formal syntax

Examples

Specifications

Browser compatibility

Legend

See also

Document Tags and Contributors

overflow

Syntax

Values

Mozilla extensions

Formal syntax

Examples

Specifications

Browser compatibility

Legend

See also

Document Tags and Contributors

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