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<!DOCTYPE html>
<html>
<head>
<style>
div {
background-color: white;
width: 12px;
height: 60px;
}
body {
background-color: black;
margin: 0px;
padding: 0px;
border: 0px;
}
</style>
</head>
<body>
<div></div>
</body>
</html>