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<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN"
"http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml" lang="en">
<head>
<title></title>
<style type="text/css">
body {
margin: 10%;
}
</style>
</head>
<body>
<h2>header 2</h2>
<h3>header 3</h3>
<p>This is a text.</p>
</body>
</html>
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