<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.1//EN" "http://www.w3.org/TR/xhtml11/DTD/xhtml11.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
 <head>
  <title>test reference</title>
  <style type="text/css">
   div { color: red; width: 10em; }
  </style>
 </head>
 <body>
  <p>You should not see any text below.</p>
 </body>
</html>