CSS Helper by calo
CSS Helper shows only the author CSS that actually won the cascade for any element you right-click.
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About this extension
CSS Helper shows only the author CSS that actually won the cascade for any element you right-click. Declarations render exactly as written in your source files, with filenames on the right. No shorthand expansion, no UA defaults, no inherited chain — just what your CSS did. Supports @layer, @media, @supports, inline styles
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Permissions and data
Required permissions:
- Access your data for all websites
Data collection:
- The developer says this extension doesn't require data collection.
More information
- Add-on Links
- Version
- 0.3.0
- Size
- 56.22 KB
- Last updated
- 21 days ago (Apr 16, 2026)
- Related Categories
- License
- MIT License
- Privacy Policy
- Read the privacy policy for this add-on
- Version History
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