OddBird

What does revert do in CSS?

And how is it different from unset or initial?

I’ve often used initial and unset in my CSS – global keywords that can be applied to any property. The difference is small, but important: unset allows inheritance, while initial does not. But then Firefox implemented revert and I was confused – how is this one different from the others?!

Revert takes user and user-agent styles into consideration

It turns out revert is the one I wanted all along. It rolls back styles to the expected browser default for each element, rather than using the specification default for each property.

Miriam Suzanne is a product lead, user-experience designer, writer, speaker, and open source developer.


Miriam presenting

Resilient Web Training & Consulting

Take full advantage of the universal web, and reduce maintenance over the long term with resilient HTML, CSS, and JS systems. OddBird provides custom consulting and in-depth trainings on front-end architecture and workflow – from advanced HTML/CSS to integrated design systems, component libraries, testing, and documentation.

Contact us for 1-3 day workshops with Miriam Suzanne, or custom web app creation with our team of Python, UX, and front-end experts.

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