>>2350The opacity thing is a nightmare. I was working on this
boutique agency site last month and some dev had applied a subtle fade to the main wrapper. It completely nuked my dropdown menus because they were stuck inside that new layer. I spent three hours chasing down why my tooltips were suddenly buried under the footer. Every time I tried to bump the z-index, it just stayed trapped behind the parent's layer. Using
local contexts is the only way to stay sane. It's basically impossible to manage a global mess like that once you start adding transforms or filters into the mix.