overscroll-behavior-y

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

See overscroll-behavior for a full explanation.

Syntax

css

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

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

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

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-y = 
  contain  |
  none     |
  auto

Examples

Preventing an underlying element from scrolling vertically

css

.messages {
  height: 220px;
  overflow: auto;
  overscroll-behavior-y: contain;
}

See overscroll-behavior for a full example and explanation.

Specifications

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

Browser compatibility

	Desktop						Mobile
	Chrome	Edge	Firefox	Internet Explorer	Opera	Safari	WebView Android	Chrome Android	Firefox for Android	Opera Android	Safari on IOS	Samsung Internet
`overscroll-behavior-y`	63	18 Currently the `none` value incorrectly behaves as `contain` (allowing for the elastic bounce effect).	59	No	50	16	63	63	59	46	16	8.0

Docs

Docs4dev

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