   <i class="off material-icons">straighten</i>
                <i class="on material-icons">straighten</i>
              </div>
            </label>
            <!--Grid toggle-->
            <label for="toggleGrid">
              <input type="checkbox" onclick="toggleGrid()" id="toggleGrid" />
              <div class="button" title="Grid">
                <i class="off material-icons">grid_off</i>
                <i class="on material-icons">grid_on</i>
              </div>
            </label>
         