Individual skill
embedded-or-inline-css
Use when reviewing stylesheets, component styles, and responsive behavior related to Avoid embedded and inline CSS. Check the rendered layout across breakpoints and interaction states before proposing a fix.
skills/embedded-or-inline-css/SKILL.md
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- Observed behavior
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- Last checked
- Nov 9, 2026
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- Repository last updated
- Oct 31, 2026
- License
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- frontend Repository topic
- front-end-development Repository topic
- front-end-developer-tool Repository topic
- guidelines Repository topic
- checklist Repository topic
- reference Repository topic
- web-development Repository topic
- html Repository topic
- css Repository topic
- javascript Repository topic
- engineering Derived category
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SKILL.mdcore · 1,737 bytesreferences/rule.mddoc · 16,430 bytes
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# Avoid embedded and inline CSS
Inline CSS cannot be cached separately, increases HTML payload, breaks separation of concerns, and is harder to maintain in large codebases.
## Quick Reference
- Move inline styles to external CSS files or CSS-in-JS
- Exception: critical CSS should be inlined for performance
- Exception: dynamic values (CSS custom properties) can be inline
- Inline CSS breaks caching and increases HTML size
## Check
Verify that inline CSS and embedded styles are avoided except for valid use cases like critical CSS, dynamic styles, or performance optimization.