accepted

Another useful media feature is device-aspect-ratio.

Note that the iPhone 5 does not have a 16:9 aspect ratio. It is in fact 40:71.

iPhone < 5:
@media screen and (device-aspect-ratio: 2/3) {}

iPhone 5:
@media screen and (device-aspect-ratio: 40/71) {}

iPhone 6:
@media screen and (device-aspect-ratio: 667/375) {}

iPhone 6 Plus:
@media screen and (device-aspect-ratio: 16/9) {}

iPad:
@media screen and (device-aspect-ratio: 3/4) {}