.vertikal-zentrieren{display:flex;flex-direction:column;justify-content:center}.mobile_menu_bar:before{transition:all 0.4s ease;display:block}.mobile_nav.opened .mobile_menu_bar:before{content:'\00D7';transform:rotate(90deg);color:red}.mobile_menu_bar:before{transition:all .4s ease;transform:rotate(0deg);display:block}.mobile_nav.opened .mobile_menu_bar::before{transition:all .4s ease;transform:rotate(90deg);display: block}