<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN"
    "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">

<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<link href="//maxcdn.bootstrapcdn.com/bootstrap/3.2.0/css/bootstrap.min.css" rel="stylesheet">
<script src="//maxcdn.bootstrapcdn.com/bootstrap/3.2.0/js/bootstrap.min.js"></script>
<script type="text/javascript">
 if (window!= window.top) { // inside iframe
   document.body.style.backgroundColor = 'transparent';
   // or document.body.style.background = 'none';
 }
</script>
<style type="text/css">
body {background:none transparent;
}
</style>
</head>

<body>
  <div>
    <div class="span6">
      <div class="container-fluid">
        <h2 class="alert">Blocked</h2>
	<button type="submit" class="btn btn-default">Turn Off</button>
      </div>
    </div>
  </div>
</body>
</html>

