how to create a material design header for the app using polymer
<pre><code>&lt;app-header fixed condenses effects="waterfall"&gt;
&lt;app-toolbar&gt;
  &lt;paper-icon-button icon="menu"&gt;&lt;/paper-icon-button&gt;
  &lt;div title&gt;My Menu&lt;/div&gt;
  &lt;paper-icon-button icon="shopping-cart"&gt;&lt;/paper-icon-button&gt;
&lt;/app-toolbar&gt;
</code></pre>

<p>The above code displays only My menu in a blank white page. How to create a app header with material design? where should i change the code?</p>