<!DOCTYPE html>
<html>
  <body style="margin: 0px; padding: 0px;">
    <svg xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink" version="1.1" width="600" height="600">
      <rect width="500px" height="500px" fill="green"/>
    </svg>
  </body>
</html>