<percentage>
A CSS data type representing a value relative to something else (usually the parent element's size or another property's value).
Syntax
/* Usage Example */
.child {
/* Takes up exactly half the width of its parent */
width: 50%;
/* Sets the font size relative to the parent's font size */
font-size: 120%;
}<percentage> Browser support
Widely available
Since
2015 96% global usage
This feature is well established and works across many devices and browser versions. It has been available across browsers since 2015.
1+
1+
1+
12+
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