Demo with youtube.com format
Demo with youtu.be format
Play my video https://youtu.be/vpO8sZDxOGI
Demo with direct youtbe video id "vpO8sZDxOGI" and different aspect ratio 4:3
Demo with a big minimum padding on the edges. Why paddings ? well if you want to give a fixed size to your close button in css, you better want to always have a minimum of space