it started from a broken search bar then when I tried to fix it something else broke, then it became the most annoying whack a mole game of all time so I removed everything and start from scratch.
I've done similar when designing/troubleshooting CSS - obnoxious colours, temporary heavy borders (potentially also obnoxious colours). Makes it much easier to see where your objects are specifically, z-index, unintentional overlaps and so on.