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Browser Support (2026):

✅ Chrome 120+ · ✅ Firefox 117+ · ✅ Safari 17.2+ · ✅ Edge 120+

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{ }CSS圧縮 / 整形🎨CSS FormatterTWCSS → Tailwind🎨CSS Beautifier

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使い方

  1. Paste your flat CSS or SCSS code into the input editor
  2. Choose conversion direction: flat to nested or nested to flat
  3. Click "Convert" to transform the CSS
  4. Copy the converted CSS code and check browser compatibility notes

ユースケース

  • Migrating from SCSS/SASS to native CSS nesting
  • Converting flat CSS to nested syntax for better readability
  • Learning native CSS nesting syntax from existing stylesheets
  • Checking if your CSS nesting is compatible with target browsers

よくある質問

Is CSS nesting supported in all browsers in 2026?
Yes! As of 2026, native CSS nesting is supported in all major browsers including Chrome 120+, Firefox 117+, Safari 17.2+, and Edge 120+. It's safe to use in production.
What is the difference between SCSS and CSS nesting?
Native CSS nesting requires the & symbol for element selectors (e.g., & span {}), while SCSS allows implicit nesting. The converter handles this difference automatically.
Should I still use SCSS?
Native CSS nesting covers most nesting use cases. However, SCSS still offers variables ($vars), mixins, functions, and loops that native CSS doesn't have (though CSS custom properties replace variables).