@media screen and (max-width: 800px) {
  .t657 {
    left: 16px !important;
    right: auto !important;
    bottom: 16px !important;
    width: 66vw !important; /* 2/3 ширины экрана */
    max-width: 66vw !important;
    margin: 0 !important;
  }

  .t657__wrapper {
    width: 100% !important;
  }
}