">Small <code>.input-group.input-group-sm</code></p>

              <div class="input-group input-group-sm">
                <input type="text" class="form-control">
                    <span class="input-group-btn">
                      <button type="button" class="btn btn-info btn-flat">Go!</button>
                    </span>
              </div>
              <!-- /input-group -->
            </div>
            <!-- /.box-body -->
          </div>
          <!-- /.box -->

        </div>
        <!--/.