designer

designer.html

<link rel="import" href="/elements/widgets/header/header.html">

<polymer-element name="my-element">

  <template>
    <style>    
      #header {
        left: 250px;
        top: 280px;
        position: absolute;
      }
    </style>
    <header id="header">Test </header>
  </template>

  <script>

    Polymer({
      
    });

  </script>

</polymer-element>