How to change the position of the block with the icon when the screen reaches the element or the end of the page?

Question

Layout

at the bottom of the page in the footer there is a block with 4 icons lined up in a row.

How to make the first icon be fixed, and when you reach the end of the page or the desired element, it becomes position: relative or absolute

Answer 1

If you are considering using plugins, try jquery.simple-scroll-follow