I spent 6 months building a Chrome extension with...

Your Chrome extension looks perfect in development. The fonts are crisp, the layout is clean, Tailwind utilities work exactly as expected. Then you deploy it to a real e-commerce site. Every style breaks. The host page has an aggressive CSS reset that overrides your carefully crafted UI. Your text-sm renders at the wrong size. Your flex containers collapse. You add !important to a few rules, then a few dozen, and eventually you realize you are fighting a war you cannot win. I spent six months bu