CSS Styles Not Applied After Cursor File Move

1. Import path incorrect after file move (e.g., './style.css' vs '../styles/style.css')
2. Stylesheet removed from HTML head or component imports
3. CSS file renamed but import statement not updated
4. CSS selector changed during refactoring, now too specific or not specific enough
5. Build tool (webpack) loader configuration missing CSS rules

Verify import paths match current file structure. Use absolute imports or check relative path depth. Ensure CSS-loader is configured in webpack. Check specificity: .button { color: red; } vs body .button { }. Inspect element in DevTools to see what styles are actually applied.