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.
| Initial value | 0 |
|---|---|
| Applies to | all elements |
| Inherited | no |
| Media | visual |
| Computed value | as specified |
| Animation type | by computed value type |
| Canonical order | per grammar |
/* <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;
auto | <length>
| Specification | Status | Comment |
|---|---|---|
| CSS Scroll Snap Module Level 1 The definition of 'scroll-margin-block-start' in that specification. | Candidate Recommendation | Initial definition |
No compatibility data found. Please contribute data for "css.properties.scroll-margin-block-start" (depth: 1) to the MDN compatibility data repository.
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https://developer.mozilla.org/en-US/docs/Web/CSS/scroll-margin-block-start