link btn btn-secondary float-left" onclick="go_to_slide(3)">Back</a>
                      </div>
                      <div class="col-6 text-center text-secondary">
                        4 of 7
                        <div class="progress" style="height: 2px">
                          <div class="progress-bar bg-info" role="progressbar" style="width: 68%" aria-valuenow="68" aria-valuemin="0" aria-valuemax="68"></div>
                        </div>
                      </div>
                      <div