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<!DOCTYPE html>
<html>
  <head>
    <title>IMA HTML5 Simple Demo</title>
    <link rel="stylesheet" type="text/css" href="style.css">
  </head>

  <body>
    <div id="mainContainer">
      <div id="content">
        <p>Ad container...</p>
        <!-- video -->
      </div>
      <div id="adContainer"></div>
    </div>
    <button id="playButton">Request ad</button>
    <script type="text/javascript" src="//imasdk.googleapis.com/js/sdkloader/ima3.js"></script>
  </body>
</html>