How to stick nav like that?

Question

JavaScript

Good afternoon.
How to make the navigation below the image in the header scroll to the top of the screen, and then stick to it (the top of the screen) and slide with the scroll?
Example: https://kirenkov.me/

Answer 1

I'm afraid you won't be able to use Zero-width space from unicode in another non-unicode encoding.

Answer 2

here is a good example

Answer 3

Position: sticky and top: 0 for block