.mobile-contact{display:none}
@media(max-width:850px){
  .mobile-contact{position:fixed;right:18px;bottom:18px;z-index:80;display:grid;place-items:center;width:48px;height:48px;border:1px solid #166d7a;border-radius:50%;background:#fff;color:#166d7a;box-shadow:0 5px 22px #12303f24}
  .mobile-contact:focus-visible{outline:3px solid #bb632d;outline-offset:4px}
}