This page is displayed in an iframe
<!DOCTYPE html>
<html lang="en">
<head>
<title>CSS</title>
<meta charset="utf-8">
<style>
#leftcol {float: left; width: 120px;}
#rightcol {margin-left:150px;}
</style>
</head>
<body>
<div id="leftcol">
<a href="demo.html" target="right">Home</a><br /><br />
<a href="http://www.loc.edu" target="right">LOC</a>
</div>
<div id="rightcol">
<iframe src="demo.html" width="100%" height="600" name="right">
<p>Your browser does not support iframes.</p>
</iframe>
</div>
</body>
</html>