@media screen and (max-width: 980px){
  /* разные типы мобильных меню Tilda */
  .t-menu__mobile,
  .t280__menu__content,
  .t450__menu__content,
  .t456__menu__content,
  .t228__menu__wrapper,
  .t702__menu__wrapper {
    background-color: rgba(140, 15, 31, 0.70) !important; /* #8C0F1F @ 70% */
  }
}