 h3 p-3 flex-fill astro-3HS6YOU4">
                        .app-container
                      </div>
                      <div class="bg-danger text-white h3 p-3 astro-3HS6YOU4">
                        .app-footer
                      </div>
                    </div>
                  </div>

                  <h4 class="astro-3HS6YOU4">Example : 1 rows <small class="astro-3HS6YOU4">app-container</small></h4>
                  <div class="d-flex flex-row astro-3HS6YOU4">
                    <div class