With good naming convention, CSS works pretty well
summary
Claims that a three‑developer React.js app ships 6561 lines of CSS with just 5 !important and records zero CSS issues over a year: no refactoring typos, no style leaks, no performance problems. Codebase uses BEM naming, embraces PostCSS, relies on Flexbox and suit CSS, and adds a plugin to enforce naming rules so styles stay consistent, local, and easy to delete rather than brittle abstractions.
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