@media (max-width: 767px){
  header nav.mobile-open{display:flex!important;position:absolute;top:70px;left:1rem;right:1rem;flex-direction:column;align-items:stretch;gap:0;padding:1rem;border:1px solid rgba(255,255,255,.16);border-radius:1rem;background:#333651;box-shadow:0 18px 40px rgba(0,0,0,.35)}
  header nav.mobile-open a{padding:.75rem 0;color:#fff}
}