              <div class="external-event bg-warning">Go home</div>
                    <div class="external-event bg-info">Do homework</div>
                    <div class="external-event bg-primary">Work on UI design</div>
                    <div class="external-event bg-danger">Sleep tight</div>
                    <div class="checkbox">
                      <label for="drop-remove">
                        <input type="checkbox" id="drop-remove">
                        remove after drop
              