Stefan Judis • 1/10/2026

Firefox DevTools hides unreferenced CSS variables (#note)

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Firefox 145 introduces a new DevTools feature that automatically hides unreferenced CSS custom properties, making it easier to parse and debug stylesheets filled with variables. This small but impactful change reduces visual noise when inspecting elements like :root, streamlining the development process for frontend engineers working with modern CSS.

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#Web Development #css variables #frontend development
Firefox DevTools hides unreferenced CSS variables (#note)

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