div class="row justify-content-center">
              <div class="col-sm-4">
                <fieldset>
                  <legend>Checkbox</legend>
                  <div>
                    <label>
                      <input type="checkbox">Option 1
                    </label>
                  </div>
                  <div>
                    <label>
                      <input type="checkbox">Option 2
                    </label>
                  </div>
                  <div>
                    