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<!DOCTYPE html>
<html>
<head>
<meta name="viewport" content="width=device-width, initial-scale=1">
<link rel="stylesheet" href="https://code.jquery.com/mobile/1.4.5/jquery.mobile-1.4.5.min.css">
<script src="https://code.jquery.com/jquery-1.11.3.min.js"></script>
<script src="https://code.jquery.com/mobile/1.4.5/jquery.mobile-1.4.5.min.js"></script>
</head>
<body>
<div data-role="page">
  <div data-role="header">
    <h1>Welcome To My Homepage</h1>
  </div>
  <div data-role="main" class="ui-content">
    <a href="#myPopup" data-rel="popup" class="ui-btn ui-btn-inline ui-corner-all">Show Popup</a>
    <div data-role="popup" id="myPopup" class="ui-content">
      <a href="#" data-rel="back" class="ui-btn ui-corner-all ui-shadow ui-btn ui-icon-delete ui-btn-icon-notext ui-btn-right">Close</a>
      <p>I have a close button at the top right corner.</p>
      <p><b>Tip:</b> You can also click outside to close me.</p>
    </div>
  </div>
  <div data-role="footer">
    <h1>Footer Text</h1>
  </div>
</div> 
</body>
</html>