<!doctype html> <title>Tests that system-ui font-family works</title> <link rel="help" href="https://drafts.csswg.org/css-fonts/#system-ui-def"> <link rel="author" title="Emilio Cobos Álvarez" href="mailto:emilio@crisal.io"> <link rel="author" title="Mozilla" href="https://mozilla.org"> <link rel="mismatch" href="system-ui-notref.html"> <link rel="stylesheet" href="/fonts/ahem.css"> <style> p { font-family: system-ui, Ahem; } </style> <p>ABC</p>