Polymer-3pane

polymer-3pane.html

<link rel="import" href="../core-drawer-panel/core-drawer-panel.html">

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

  <template>
    <style>    
      :host {
        position: absolute;
        width: 100%;
        height: 100%;
        box-sizing: border-box;
      }
      #left_center_drawer_panel {
        position: absolute;
        top: 0px;
        right: 0px;
        bottom: 0px;
        left: 0px;
      }
      #center_right_drawer_panel {
        position: absolute;
        top: 0px;
        right: 0px;
        bottom: 0px;
        left: 0px;
      }
      #leftbar {
        background-color: red;
      }
      #centerbar {
        background-color: green;
      }
      #rightbar {
        background-color: blue;
      }
    </style>
    <core-drawer-panel transition id="left_center_drawer_panel" touch-action>
      <div id="leftbar" drawer></div>
      <div main>
        <core-drawer-panel transition rightdrawer id="center_right_drawer_panel" touch-action>
          <div id="centerbar" main></div>
          <div id="rightbar" drawer></div>
        </core-drawer-panel>
      </div>
    </core-drawer-panel>
  </template>

  <script>

    Polymer({
      
    });

  </script>

</polymer-element>