CSS · Properties — CSS Masking

mask-border-mode

The CSS mask-border-mode property. Initial value: alpha. Not inherited.

cssRunnable example css course

Syntax

mask-border-mode: luminance | alpha

Example

Try it

.demo { mask-border-mode: alpha; }

Media: visual. Applies to: allElementsSVGContainerElements. Computed value: asSpecified.

Reference pages are the quick answer. The course explains the why, shows the full example and ends with a challenge.