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_card {
        position: relative;
        width: 300px;
        height: 300px;
        border-top-left-radius: 2px;
        border-top-right-radius: 2px;
        border-bottom-right-radius: 2px;
        border-bottom-left-radius: 2px;
        box-shadow: rgba(0, 0, 0, 0.0980392) 0px 2px 4px, rgba(0, 0, 0, 0.0980392) 0px 0px 3px;
        left: 20px;
        top: 20px;
        background-color: rgb(255, 255, 255);
      }
    </style>
    <core-card id="core_card" layout vertical></core-card>
  </template>

  <script>

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

  </script>

</polymer-element>