@media (max-width: 767px) {
  html.gsfc-customer-service-page .mobile-customer-service .gsfc-service-messages {
    flex: 1 1 auto !important;
    min-height: 0 !important;
    overflow-y: auto !important;
    overflow-x: hidden !important;
    -webkit-overflow-scrolling: touch !important;
    overscroll-behavior: contain !important;
    touch-action: pan-y !important;
  }
}