@media (max-width: 820px){
  /* Must outrank V5.4.1d selectors which also use !important */
  .mobile-nav.mobile-nav-v43 > a.mobile-message-link,
  .mobile-nav.mobile-nav-v43 > a.mobile-alert-link{
    display:none !important;
  }

  .mobile-nav.mobile-nav-v43{
    grid-template-columns:repeat(4,minmax(0,1fr)) !important;
  }
}