<!DOCTYPE html>
<html>
<head>
    <meta charset="utf-8">
    <title>Non-reference case for text-decoration-thickness</title>
    <link rel="stylesheet" type="text/css" href="/fonts/ahem.css">
    <style>
        div span {
            font: 20px/1 Ahem;
            padding-right: 1em;

            text-decoration: underline;
            text-decoration-thickness: 20px;
            text-underline-offset: .5em;
        }
    </style>
</head>
<body>
    <p>Test passes if the underline thickness is 10px thick.</p>
    <div><span>XXXX</span></div>
</body>
</html>