ia-query/iron-media-query.html">
<link rel="import" href="../../../paper-icon-button/paper-icon-button.html">
<link rel="import" href="../../../paper-item/paper-item.html">
<link rel="import" href="../../../paper-menu/paper-menu.html">
<link rel="import" href="../../../paper-tabs/paper-tabs.html">

<dom-module id="x-app">

  <template>

    <style>

      app-toolbar {
        background-color: #dcdcdc;
      }

      .main-header {
        box-shadow: 0px 5px 6px -3px rgba(0, 0, 0, 0.4);
      }

      pap