  <input type="text" class="form-control">
              </div>
              <!-- /input-group -->
              <p class="margin">Normal</p>

              <div class="input-group">
                <div class="input-group-btn">
                  <button type="button" class="btn btn-danger">Action</button>
                </div>
                <!-- /btn-group -->
                <input type="text" class="form-control">
              </div>
              <!-- /input-group -->
              <p class="margin