css/css-namespaces/syntax-008.xml

<html xmlns="http://www.w3.org/1999/xhtml">
 <head>
  <link rel="author" title="Anne van Kesteren" href="http://annevankesteren.nl/"/>
  <link rel="author" title="Opera Software ASA" href="http://opera.com/"/>
  <link rel="help" href="http://www.w3.org/TR/css-namespaces-3/#syntax"/>
  <link rel="match" href="reference/ref-lime-2.xml"/>
  <title>CSS Namespaces Test Suite: escapes in prefix</title>
  <style>
   @namespace \72x url("test");
   t { background:red }
   r\78|t { background:lime }
  </style>
  <style>
   @namespace \032  url("test"); /* two spaces, see CSS 2.1, 4.1.3 */
   t2 { background:red }
   \32|t2 { background:lime }
  </style>
 </head>
 <body>
  <p><t xmlns="test">This sentence should have a green background.</t></p>
  <p><t2 xmlns="test">This sentence should have a green background.</t2></p>
 </body>
</html>