                placeholder="Recipient's username"
                          aria-label="Recipient's username"
                          aria-describedby="basic-addon33" />
                        <span class="input-group-text" id="basic-addon33">@example.com</span>
                      </div>

                      <div class="input-group input-group-merge">
                        <span class="input-group-text" id="basic-addon34">https://example.com/users/</span>
                        <input type="text