Hi. How to create “back to top button” which shows up only after scrolling down, not from the first screen.
There’s no onScroll or Y coordinate variable in Figma as far as I know, so you can’t.
Happy to be shown to be wrong though 
This is very easy to achieve. Place this button behind the fold line and apply the sticky position to it.
I think that only works if there is a fixed fold line, so if user testing with people who have a larger screen the BTT button might show early.