<!doctype html>
<html>
<head>
  <meta charset="utf-8">
  <title>CSS Reference File</title>
  <link rel="author" title="Florian Rivoal" href="mailto:florian@rivoal.net">
  <style>
  div {
    font-size: 50px;
    position: absolute;
    left: 30px;
    top: 50px;
  }
  div span {
    color: green;
    background: green;
    float: left;
  }
  </style>
</head>
<body>
  <p>Test passes if there is a <strong>filled green rectangle</strong> and <strong>no red</strong>.</p>
  <div><span>a</span></div>
</body>
</html>