@media (max-width: 640px) {
  #i2x8a7rvb_0 iframe {
    max-width: 100% !important;
    height: auto !important;
    width: 100% !important;
  }
  #i2x8a7rvb_0 video {
    max-width: 100% !important;
    height: auto !important;
    width: 100% !important;
  }
}