@media (max-width: 640px) {
  .uc-transparentmenu,
  .uc-transparentmenu.t-menufix,
  .uc-transparentmenu .t-header,
  .uc-transparentmenu .t-menufix,
  .uc-transparentmenu .t-menufix_bg,
  .uc-transparentmenu .t-menu__bg {
    background-color: rgba(255, 255, 255, 0.85) !important;
    box-shadow: none !important;
  }
}