heet" type="text/css" href="../urth-viz-chart/urth-viz-chart.css">

        <div id="settings-section">
          <paper-dropdown-menu label="Category" noink no-animations>
            <paper-menu class="dropdown-content" selected="{{primary}}">
              <template is="dom-repeat" items="[[columns]]" as="column">
                <paper-item>[[column]]</paper-item>
              </template>
            </paper-menu>
          </paper-dropdown-menu>
          <paper-dropdown-menu label="Value" noink no-an