<!DOCTYPE html>
<html>
  <head>
    <meta charset="utf-8">
    <title>fractions bar</title>
    <style type="text/css">
      #green {
          position: absolute;
          background: green;
          width: 150px;
          height: 150px;
          left: 50px;
          top: 50px;
      }
    </style>
  </head>
  <body>
    <p>This test passes if you see a green <strong>square</strong> and no red.</p>
    <div>
      <div id="green"></div>
    </div>
  </body>
</html>