How to make a video background for a block?

Question

css

It is required to implement a block with a video insert, the question is that I can’t find information on how such a block is made if it is strictly limited in size and not on the whole page.
In fact, you need a responsive div block with a height of 600px in which the video will play.
Please help, I will be very grateful =))

Answer 1

https://codepen.io/dudleystorey/pen/PZyMrd

Answer 2

codepen.io/ulitcos/pen/PzOpVm