<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8"/>
<title>MathML as a phrasing content (reference)</title>
</head>
<body>
  <p>Test passes if there is a green square and no red.</p>

  <div>
    <div style="position: absolute; background: green; width: 300px; height: 300px;"></div>
  </div>

</body>
</html>