@media(max-width:800px){
  .site-header{position:relative}
  .main-nav.mobile-open{display:flex;position:absolute;z-index:5;top:65px;left:0;right:0;background:var(--cream);padding:18px 5vw;flex-direction:column;gap:18px;border-bottom:1px solid var(--line)}
}