<cap>
Relative unit based on the height of capital letters. 1cap = cap height of the element's font.
Quick example
h1 { font-size: 2cap; }<cap> Browser Support
Widely availableSince 202352% global usage
This feature is well established and works across many devices and browser versions. It has been available across browsers since 2023.
Safe to use without fallbacks.
118+
97+
17.2+
118+