`overscroll-behavior-x` CSS property

Baseline Limited availability

This feature is not Baseline because it does not work in some of the most widely-used browsers.

The overscroll-behavior-x CSS property sets the browser's behavior when the horizontal boundary of a scrolling area is reached.

See overscroll-behavior for a full explanation.

Syntax

/* Keyword values */
overscroll-behavior-x: auto; /* default */
overscroll-behavior-x: contain;
overscroll-behavior-x: none;

/* Global values */
overscroll-behavior-x: inherit;
overscroll-behavior-x: initial;
overscroll-behavior-x: revert;
overscroll-behavior-x: revert-layer;
overscroll-behavior-x: unset;

Values

This property is specified as one of the following keyword values:

auto: The default scroll overflow behavior occurs as normal.
contain: Default scroll overflow behavior (e.g., "bounce" effects) is observed inside the element where this value is set. However, no scroll chaining occurs on neighboring scrolling areas; the underlying elements will not scroll. The contain value disables native browser navigation, including the vertical pull-to-refresh gesture and horizontal swipe navigation.
none: No scroll chaining occurs to neighboring scrolling areas, and default scroll overflow behavior is prevented.

Formal definition

Initial value	auto
Applies to	non-replaced block-level elements and non-replaced inline-block elements
Inherited	no
Computed value	as specified
Animation type	discrete

Formal syntax

overscroll-behavior-x = 
  contain |
  none |
  auto

Examples

Preventing an underlying element from scrolling horizontally

In our overscroll-behavior-x example (see source code also), we have two block-level boxes, one inside the other. The outer box has a large width set on it so the page will scroll horizontally. The inner box has a small width (and height) set on it so it sits comfortably inside the viewport, but its content is given a large width so it will scroll horizontally.

By default, when the inner box is scrolled and a scroll boundary is reached, the whole page will begin to scroll, which is probably not what we want. To avoid this, you can set overscroll-behavior-x: contain on the inner box:

main > div {
  height: 300px;
  width: 500px;
  overflow: auto;
  position: relative;
  top: 100px;
  left: 100px;
  overscroll-behavior-x: contain;
}

Specifications

Specification
CSS Overscroll Behavior Module Level 1 # overscroll-behavior-longhands-physical

Browser compatibility

	Desktop					Mobile
	Chrome	Edge	Firefox	Opera	Safari	Chrome Android	Firefox for Android	Opera Android	Safari on iOS	Samsung Internet	WebView Android	WebView on iOS
`overscroll-behavior-x`	144 63–144 The property has no effect on scroll containers that have no scrollable overflow.	18	150 59–150 The property has no effect on scroll containers that have no scrollable overflow.	128 50–128 The property has no effect on scroll containers that have no scrollable overflow.	16 The property has no effect on scroll containers that have no scrollable overflow.	144 63–144 The property has no effect on scroll containers that have no scrollable overflow.	150 59–150 The property has no effect on scroll containers that have no scrollable overflow.	95 46–95 The property has no effect on scroll containers that have no scrollable overflow.	16 The property has no effect on scroll containers that have no scrollable overflow.	8.0 The property has no effect on scroll containers that have no scrollable overflow.	144 63–144 The property has no effect on scroll containers that have no scrollable overflow.	16 The property has no effect on scroll containers that have no scrollable overflow.
`auto`	63	18	59	50	16	63	59	46	16	8.0	63	16
`chain`	150	150	No	134	No	150	No	101	No	No	150	No
`contain`	63	18	59	50	16	63	59	46	16	8.0	63	16
`none`	63	79 18–79 The `none` value incorrectly behaves as `contain` (allowing for the elastic bounce effect).	59	50	16	63	59	46	16	8.0	63	16