           <strong>With dropdown</strong>
                <div class="input-group mb-3">
                  <div class="input-group-prepend">
                    <button type="button" class="btn btn-default dropdown-toggle" data-toggle="dropdown">
                      Action
                    </button>
                    <div class="dropdown-menu">
                      <a class="dropdown-item" href="#">Action</a>
                      <a class="dropdown-item" href="#">Another action</a>
                