designer

designer.html

<link rel="import" href="../core-icon-button/core-icon-button.html">
<link rel="import" href="../core-toolbar/core-toolbar.html">
<link rel="import" href="../core-header-panel/core-header-panel.html">

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

  <template>
    <style>    
      :host {
        position: absolute;
        width: 100%;
        height: 100%;
        box-sizing: border-box;
      }
      #core_header_panel {
        width: 300px;
        height: 400px;
      }
      #core_toolbar {
        color: rgb(255, 255, 255);
        background-color: rgb(79, 125, 201);
      }
      #section4 {
        height: 1000px;
        background: linear-gradient(rgb(214, 227, 231), rgb(173, 216, 230));
      }
    </style>
    <section id="section" one flex horizontal layout center>
      <core-header-panel mode="standard" id="core_header_panel">
        <section id="section4">
          <core-toolbar id="core_toolbar">
            <core-icon-button icon="menu" id="core_icon_button"></core-icon-button>
            <div id="div">Header</div>
          </core-toolbar>
        </section>
      </core-header-panel>
    </section>
  </template>

  <script>

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

  </script>

</polymer-element>