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.


/* 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;

The overscroll-behavior-x property is specified as a keyword chosen from the list of values below.



The default scroll overflow behavior occurs as normal.


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.


No scroll chaining occurs to neighboring scrolling areas, and default scroll overflow behavior is prevented.

Formal definition

Initial valueauto
Applies tonon-replaced block-level elements and non-replaced inline-block elements
Computed valueas specified
Animation typediscrete

Formal syntax

overscroll-behavior-x = 
contain |
none |


Preventing an underlying element from scrolling horizontally

In our simple 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;


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

Browser compatibility

BCD tables only load in the browser

See also