HTML
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<title>Tabs 1</title>
<style>
body {
font: 0.8em arial, helvetica, sans-serif;
}
#header ul {
list-style: none;
padding: 0;
margin: 0;
}
#header li {
display: inline;
border: 1px solid;
border-bottom-width: 0;
margin: 0 0.5em 0 0;
}
#header li a {
padding: 0 1em;
}
#header #selected {
padding-bottom: 1px;
background: white;
}
#content {
border: 1px solid;
}
</style>
</head>
<body>
<div id="header">
<h1>Tabs</h1>
<ul>
<li><a href="#">This</a></li>
<li id="selected"><a href="#">That</a></li>
<li><a href="#">The Other</a></li>
<li><a href="#">Banana</a></li>
</ul>
</div>
<div id="content">
<p>Ispum schmipsum.</p>
</div>
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</body>
</html>