The scroll-margin-block-end property defines the margin of the scroll snap area at the end 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.


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

/* Global values */
scroll-margin-block-end: inherit;
scroll-margin-block-end: initial;
scroll-margin-block-end: unset;


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

Formal definition

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

Formal syntax



Specification Status Comment
CSS Scroll Snap Module Level 1
The definition of 'scroll-margin-block-end' in that specification.
Candidate Recommendation Initial definition

Browser compatibility

Update compatibility data on GitHub
ChromeEdgeFirefoxInternet ExplorerOperaSafariAndroid webviewChrome for AndroidFirefox for AndroidOpera for AndroidSafari on iOSSamsung Internet
scroll-margin-block-endChrome Full support 69Edge Full support 79Firefox Full support 68IE No support NoOpera Full support 56Safari No support NoWebView Android Full support 69Chrome Android Full support 69Firefox Android Full support 68Opera Android Full support 48Safari iOS No support NoSamsung Internet Android Full support 10.0


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Full support
No support  
No support