Coder Facile : xHTML

<?xml version="1.0"?>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN"
        "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">
<!-- Hello World in XHTML -->
<html
  xmlns="http://www.w3.org/1999/xhtml">
    <head>
        <title>
            Hello World
        </title>
    </head>
    <body>
        <p>
            Hello World
        </p>
    </body>
</html>