bunteshaus.de/themes/buha/layouts/partials/structure/submenu.html

                     <div>
                        <details>
                            <summary style="list-style: none; text-align: right;">Menü ☰</summary>
                            <p>
                                {{ partial "structure/sidebar_submenu" . }}
                                {{ partial "structure/langs" . }}
                            </p>
                        </details>
                    </div>