<html xmlns="http://www.w3.org/1999/xhtml" xmlns:m="http://www.w3.org/1998/Math/MathML">
<head>
<style type="text/css">
[class~='t'] { display: table; }
</style>
</head>
<body>
<m:math><m:math class="t"/></m:math>
</body>
</html>