title: Polymer: How to show a DOM element not decleared in the custom/core element definition?
body: <pre><code>&lt;core-scaffold&gt;
      &lt;core-header-panel navigation flex&gt;
        &lt;core-toolbar id="navheader" style="height:100px; background-color:#E5E5E5; padding-top:18px;"&gt;
          &lt;span&gt;&lt;my-logo&gt;
            &lt;img src="images/logo.png" /&gt;
          &lt;/my-logo&gt;&lt;/span&gt;
        &lt;/core-toolbar&gt;
        &lt;core-menu&gt;
          &lt;core-item name="livemusic" label="Live music"&gt;&lt;paper-ripple&gt;&lt;/paper-ripple&gt;&lt;/core-item&gt;
        &lt;/core-menu&gt;
      &lt;/core-header-panel&gt;
      &lt;paper-input label="Your Name" block&gt;&lt;/paper-input&gt;
   &lt;/core-scaffold&gt;
  </code></pre>
  
  <p>I want the <strong>paper-input</strong> to show in the navigation bar. But it doesn't. how do I do it? (I tried to put it within the <strong>core-toolbar</strong> tags)</p>
  
  <p>Thanks in advance</p>