t>
 </head>
 <body>
  <div id="x" class="fake-component-x">
  </div>
  <div id="y" class="fake-component-y fake-component-x">
  </div>
  <div id="z" class="fake-component-z">
  </div>
  <div id="u">
  </div>
 </body>
</html>
