Maintain 16:9 aspect ratio with height 100%

问题

I want to give a div a height of 100% while maintaining a 16:9 aspect ratio. Is this possible using CSS.

I’ve seen some examples that have a width of 100% and then use a percentage padding-bottom value. But not sure how to turn it around for a 100% height.

来源：https://stackoverflow.com/questions/33442754/maintain-169-aspect-ratio-with-height-100