.mx-smtp-mode { min-width: 0; width: 100%; }
.mx-domain-config-section .mx-domain-route-row { grid-template-columns: minmax(0, 1fr) 88px minmax(230px, auto) auto; }
.mx-domain-config-section .mx-domain-route-row > label:has(.mx-smtp-mode) { min-width: 0; padding: 0; border: 0; background: transparent; }
@media (max-width: 760px) { .mx-domain-config-section .mx-domain-route-row { grid-template-columns: 1fr; } }