     </div>
                              <div class="flex-fill p-3 bg-primary astro-3HS6YOU4">
                                .side-footer
                              </div>
                            </aside>
                            <main class="_app-main flex-fill p-3 astro-3HS6YOU4">
                              <div class="flex-fill p-3 bg-danger astro-3HS6YOU4">
                                .main-heading
                              </div>
                              <div class="flex-fi