designer

designer.html

<link rel="import" href="../components/polymer/polymer.html">

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

  <template>
    <style>    
      :host {
        position: absolute;
        width: 100%;
        height: 100%;
        box-sizing: border-box;
      }
      #core_selector {
        width: 100%;
        height: 50px;
        left: 790px;
        top: 350px;
        position: absolute;
      }
    </style>
    <core-selector selected="0" id="core_selector"></core-selector>
  </template>

  <script>

    Polymer('my-element', {
      
    });

  </script>

</polymer-element>