demo.html

<!doctype html>
<html>
<head>
  <meta name="viewport" content="width=device-width, minimum-scale=1.0, initial-scale=1.0, user-scalable=yes">
  <title>Paper-calendar Demo</title>

  <script src="../webcomponentsjs/webcomponents.js"></script>
  <link rel="import" href="paper-calendar.html">
  <style>
		body,
		html {
		  margin-top: 100px;
		}
  </style>

</head>
<body unresolved horizontal layout center-justified>

  <paper-calendar></paper-calendar>

</body>
</html>