er-tabs {
        --paper-tabs-selection-bar-color: black;
        height: 100%;
        max-width: 640px;
      }

      paper-tab {
        --paper-tab-ink: #aaa;
        text-transform: uppercase;
      }

      [hidden] {
        display: none !important;
      }

    </style>

    <app-drawer-layout force-narrow>

      <app-drawer id="drawer">

        <app-toolbar></app-toolbar>

        <!-- Nav on mobile: side nav menu -->
        <paper-menu selected="{{selected}}" attr-for-selected="name">
      