<!DOCTYPE html> <meta charset="utf-8"> <title>CSS Values and Units Test: using lh in line-height</title> <link rel="author" title="Florian Rivoal" href="https://florian.rivoal.net/"> <link rel="help" href="https://drafts.csswg.org/css-values-4/#font-relative-lengths"> <link rel="match" href="../reference/ref-filled-green-100px-square.xht"> <meta name="assert" content="The lh unit resolves against the parent when used in the line-height property."> <style> div { font-size: 50px; line-height: 1; width: 100px; height: 100px; background: red; } aside { background: green; font-size: 42px; /* number doesn't matter, as long as it's neither 100 nor 50 */ line-height: 2lh; } </style> <p>Test passes if there is a filled green square and <strong>no red</strong>.</p> <div><aside> </aside></div>