nput
                          type="text"
                          class="form-control"
                          placeholder="Recipient's username"
                          aria-label="Recipient's username"
                          aria-describedby="button-addon2" />
                        <button class="btn btn-outline-primary" type="button" id="button-addon2">Button</button>
                      </div>

                      <div class="input-group">
                        <button class="btn btn-o