scroll-margin-block-start

Baseline 2019

Newly available

Since July 2019, this feature works across the latest devices and browser versions. This feature might not work in older devices or browsers.

The scroll-margin-block-start property defines the margin of the scroll snap area at the start of the block dimension that is used for snapping this box to the snapport. The scroll snap area is determined by taking the transformed border box, finding its rectangular bounding box (axis-aligned in the scroll container's coordinate space), then adding the specified outsets.

Try it

Syntax

css
/* <length> values */
scroll-margin-block-start: 10px;
scroll-margin-block-start: 1em;

/* Global values */
scroll-margin-block-start: inherit;
scroll-margin-block-start: initial;
scroll-margin-block-start: revert;
scroll-margin-block-start: revert-layer;
scroll-margin-block-start: unset;

Values

<length>

An outset from the block start edge of the scroll container.

Formal definition

Initial value0
Applies toall elements
Inheritedno
Computed valueas specified
Animation typeby computed value type

Formal syntax

scroll-margin-block-start = 
  <length>

Specifications

Specification
CSS Scroll Snap Module Level 1
# margin-longhands-logical

Browser compatibility

BCD tables only load in the browser

See also