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<html>
<head>
<link rel="author" title="Myles C. Maxfield" href="mailto:mmaxfield@apple.com"/>
<link rel="help" href="https://drafts.csswg.org/css-fonts-4/#standard-font-families"/>
<link rel="mismatch" href="standard-font-family-14-notref.html"/>
<meta name="assert" content="ui-serif in @font-face works"/>
<style>
@font-face {
    font-family: "AppleSystemUISerif";
    src: local("ui-serif");
}
</style>
</head>
<body>
<div>
<div style="display: inline-block; font: 72px 'AppleSystemUISerif';">HeJllo</div>
</div>
</body>
</html>