<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
 <head>
  <style type="text/css">
    * { color: green; }
  </style>
 </head>
 <body>
   <p>This sentence must be green.</p>
   <p>This sentence must be green.</p>
   <p>This sentence must be green.</p>
   <p>This sentence must be green.</p>
   <p>This sentence must be green.</p>
   <p>This sentence must be green.</p>
   <p>This sentence must be green.</p>
   <p>This sentence must be green.</p>
 </body>
</html>