<html>
<body>
You should see two iframes below.  The narrow one should be black.  The wider one should be green.
<p>
<iframe style="width: 150px; height: 150px; background-color: black"></iframe>
<iframe style="width: 650px; height: 150px; background-color: green"></iframe>
</p>
</body>
</html>
