<!doctype html> | |
<meta charset="utf-8"> | |
<title>CSS Test Reference</title> | |
<link rel="author" title="Emilio Cobos Álvarez" href="mailto:emilio@crisal.io"> | |
<style> | |
div { | |
width: calc(1ex + 1ch + 1em); | |
height: calc(1ex + 1ch + 1em); | |
background: green; | |
} | |
</style> | |
<div></div> |