CSS overscroll-behavior-block Property

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Example

Turn off scroll chaining for a scrollable <div> element in the block direction:

#yellowDiv {
overscroll-behavior-block: contain;
}

More "Try it Yourself" examples below.

Definition and Usage

The overscroll-behavior-block property is used to turn off scroll chaining or overscroll affordance on an element when you try to scroll past the scroll boundary in the block direction.

Scroll chaining is when overscrolling on an element leads to scroll behavior on the parent element. This is default behavior.

Overscroll affordance is a feedback to the user when trying to scroll beyond the scroll boundary. For example, a visual feedback together with a page refresh normally happens on mobile devices when tying to scroll beyond the top of a page.

The CSS overscroll-behavior-block and overscroll-behavior-inline properties are very similar to CSS properties overscroll-behavior-x and overscroll-behavior-y, but the overscroll-behavior-block and overscroll-behavior-inline properties are dependent on block and inline directions.

Note: The related CSS property writing-mode defines block direction. This affects whether the block direction is in the x-direction or y-direction and the result of the overscroll-behavior-block property. For pages in English, block direction is downward and inline direction is left to right.

Default value:	auto
Inherited:	no
Animatable:	no. Read about animatable
Version:	CSS3
JavaScript syntax:	object.style.overscrollBehaviorBlock="none" Try it

Browser Support

The numbers in the table specify the first browser version that fully supports the property.

Property
overscroll-behavior-block	63.0	18.0	59.0	16.0	50.0

CSS Syntax

overscroll-behavior-block: auto|contain|none|initial|inherit;

Property Values

Value	Description
auto	Allows scroll chaining and overscroll affordance behavior. This is default
contain	Allows overscroll affordance behavior, but not scroll chaining.
none	Does not allow overscroll affordance or scroll chaining behavior.
initial	Sets this property to its default value. Read about initial
inherit	Inherits this property from its parent element. Read about inherit

More Examples

With writing-mode property

With the writing-mode property value of a <div> element set to 'vertical-rl', the block direction is in the x-direction, and so the overscroll-behavior-block now works in the x-direction instead of the y-direction:

#yellowDiv {
writing-mode: vertical-rl;
overscroll-behavior-block: contain;
}

Try it Yourself »

CSS overscroll-behavior property: CSS Overscroll-behavior property

CSS overscroll-behavior-inline property: CSS Overscroll-behavior-inline property

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