[jchw]

Yes, I understand that. However, empty divs are not an edge case, and I can imagine a lot of not-insane reasons an empty div might be on top of a <video>. The entire player chrome is within the video nowadays, and it often intersected in the past (the old seek bar for example.) If there is more to this story than an empty div, I would be interested to hear. Today's YouTube seems to put display: none on almost all of the overlays when the user is not hovered, and if that isn't good enough, I think that is a bit absurd. (Actually, there are some empty divs, but they're really just empty... Some contain display: none'd divs.)