Z-index can either be your friend, or enemy

@Charon92 that's why I add a variable for every z-index I'm declaring in a _variables.scss . it may seem overly tedious, but it pays out when having to get the stacking of different elements right and to "stay on top of things"

@Atlas I have a mixin which does similar. It has normal, ontop, overlay, and behind. Found it easier to work with, certainly