The mask-border-width CSS property specifies offsets that are used to divide the mask border image area into nine parts.
Syntax
CSS
mask-border-width: value;
JS
object.style.maskBorderWidth = "value";
Values
<'mask-border-width'> = [ <length-percentage> | <number> | auto ]{1,4}
<length-percentage> = [ <length> | <percentage> ]
<length>
Specifies the length using a number followed by a unit of measurement.
<percentage>
Specifies the percentage using a number followed by a percent sign (%).
<number>
An integer or zero or more decimal digits followed by a dot (.) followed by one or more decimal digits. The first character may be preceded by a sign (- or +). The last character may be succeeded by an exponent (e or E) and an integer.
auto
Automatically specified by the user agent.
Initial
auto
