gistfile1.txt

@media (min-aspect-ratio: 16/9) {
  .fullscreen-bg__video video { 
    height: 300%; 
    top: -100%; 
  }
}
@media (max-aspect-ratio: 16/9) {
  .fullscreen-bg__video video { 
    width: 300%; 
    left: -100%; 
  }
}