<!DOCTYPE html>
<html>
<head>
  <style type="text/css">
    .box {
      height: 50px;
      width: 50px;
      background-image: -webkit-linear-gradient(blue, blue);
      background-color: red;
      -webkit-box-shadow: 20px 20px 5px green;
    }
  </style>
</head>
<body>
  Test passes when a blue box is drawn with a green shadow.
  <div class="box"></div>
</body>
</html>