index.html

<!doctype html>
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<head>
  <meta charset="utf-8">
  <meta http-equiv="X-UA-Compatible" content="IE=edge,chrome=1">

  <title></title>

  <meta name="viewport" content="width=device-width,initial-scale=1">

  <!-- Global CSS for the page and tiles -->
  <link rel="stylesheet" href="css/main.css">

</head>

<body>

  <div class="grid">
    <section></section>
    <section></section>
  </div>

  <!-- include jQuery  and packery and imagesloaded-->
  <script src="libs/jquery.min.js"></script>
  <script src="libs/packery.pkgd.min.js"></script>
  <script src="https://unpkg.com/imagesloaded@4.1/imagesloaded.pkgd.min.js"></script>

  <!-- Once the page is loaded, initalize the plug-in. -->
  <script type="text/javascript" src="script.js"></script>

</body>
</html>