mask-border-slice
Specifies how to 'slice' the mask border image into nine regions (four corners, four edges, and a center). This allows the edges to scale while keeping the corners fixed.
It is documented as part of the CSS Masking specification.
Syntax
/* Usage Example */
.masked-element {
/* Slices the mask image 30px from each edge */
mask-border-slice: 30;
}
/* Syntax */
mask-border-slice: fill;
/* Global values */
mask-border-slice: inherit;
mask-border-slice: initial;
mask-border-slice: revert;
mask-border-slice: revert-layer;
mask-border-slice: unset;mask-border-slice Browser support
Widely available
Since
2015 92% global usage
This feature is well established and works across many devices and browser versions. It has been available across browsers since 2015.
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