<html>
<head>
<style type="text/css">
.failure {
    background: red;
    border: 0px solid black;
    height: 16px;
    width: 16px;
}
</style>
</head>
<body style="margin: 0px;">
<div>Two green 16x16 pixel squares should appear below stacked vertically.</div>
<div class="failure">
  <img src="resources/favicon.ico">
</div>
<iframe src="resources/favicon.ico" class="failure"></iframe>
</body>
</html>