@media screen and (max-width: 768px) {
  .t-popup__overlay,
  [class*="popup"],
  .t-modal__overlay {
    background-color: transparent !important;
  }
  .t-popup__box,
  .t-popup,
  [class*="modal"] {
    background-color: #f2f2f2 !important;
  }
}