mask-border-width
Sets the thickness of the mask border. If this is different from the element's actual border width, the mask border will scale to fit.
Quick example
.masked-element {
/* Sets the mask border to be 20px wide */
mask-border-width: 20px;
}Quick facts
Initial value
autoInherited
No
Applies to
all elements and SVG container elements
Animation type
discrete
Values
auto mask-border-width 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.
Safe to use without fallbacks.
1+
17.2+
79+