css property
`overscroll-behavior-x` CSS property
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
containvalue disables native browser navigation, including the vertical pull-to-refresh gesture and horizontal swipe navigation.
- : 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
none- : No scroll chaining occurs to neighboring scrolling areas, and default scroll overflow behavior is prevented.
Formal definition
Formal syntax
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;
}