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.
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Syntax
/* <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: unset;
Values
<length>- An outset from the block start edge of the scroll container.
Formal definition
| Initial value | 0 |
|---|---|
| Applies to | all elements |
| Inherited | no |
| Computed value | as specified |
| Animation type | by computed value type |
Formal syntax
<length>Specifications
| Specification | Status | Comment |
|---|---|---|
| CSS Scroll Snap Module Level 1 The definition of 'scroll-margin-block-start' in that specification. |
Candidate Recommendation | Initial definition |
Browser compatibility
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The compatibility table on this page is generated from structured data. If you'd like to contribute to the data, please check out https://github.com/mdn/browser-compat-data and send us a pull request.