<link href="//maxcdn.bootstrapcdn.com/bootstrap/3.3.0/css/bootstrap.min.css" rel="stylesheet" id="bootstrap-css">
<script src="//maxcdn.bootstrapcdn.com/bootstrap/3.3.0/js/bootstrap.min.js"></script>
<script src="//code.jquery.com/jquery-1.11.1.min.js"></script>
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<div id="main">
<div id="header">
<div class="inner">
<div class="efect one">
<h1>THE RED SIDE</h1>
</div>
<div class="efect two">
<h1>THE GREEN SIDE</h1>
</div>
</div>
</div>
</div>