<!DOCTYPE html>
<html>
<head>
<script>
if (window.internals)
    window.internals.settings.setShouldAllowDesignSystemUIFonts(true);
</script>
<style>
@font-face {
    font-family: "AppleSystemUISerif";
    src: local("-apple-system-ui-serif");
}
</style>
</head>
<body>
<div>
<div style="display: inline-block; font: 72px 'AppleSystemUISerif'; font-synthesis: none;">HeJllo</div>
</div>
</body>
</html>