layout-with-polymer.html

<!DOCTYPE html>
<html>
<head lang="en">
  <meta charset="UTF-8">
  <title>Layout w/ Polymer</title>
  <script src="bower_components/webcomponentsjs/webcomponents.js"></script>
  <script src="bower_components/polymer/polymer.js"></script>
  <link rel="import" href="bower_components/polymer/layout.html"/>
  <style type="text/css">
    [vertical] * {
      border: 1px solid grey;
    }
  </style>
</head>

<body fullbleed vertical layout>
  <div flex layout vertical>
    <header>Block 1</header>
    <div flex>Block 2</div>
    <footer>Block 3</footer>
  </div>
</body>

</html>