Displaying a site element on top of other windows?

Question

HTML

In Yandex waterbuser, it is possible to pin the video player on top of other windows; Is it possible to implement something similar, but with any element of the site?

Answer 1

The site element cannot go beyond the page - you need to open a separate window. By the way, Google lowers the rating of sites if they themselves pop-up windows appear - without user action.