Skip to main
Video
CSS snippet showing display revert

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.

Upcoming Workshop

Mia from behind,
standing at a laptop -
speaking to a conference audience
and gesturing to one side

Cascading Style Systems

A workshop on resilient & maintainable CSS

New CSS features are shipping at an unprecedented rate – cascade layers, container queries, the :has() selector, subgrid, nesting, and so much more. It’s a good time to step back and understand how these tools fit together in a declarative system – a resilient cascade of styles.

Register for the October workshop »

Recent Videos

  1. Video post type

    Smashing Hour with Miriam Suzanne

    I joined Geoff Graham for a Smashing live stream to talk about CSS, web standards, music, and more!

    see all Video posts
  2. Video post type

    Web Development Is Theater

    I joined Den Delimarsky on the Work Item podcast to talk about my path as a developer – from building a website for my theater company, to building a career and a company around it. In this show, we talk about the power of the web, and how CSS is…

    see all Video posts
  3. Video post type

    Demystifying CSS Container Queries

    CSS Container Queries promise even more powerful styling approaches, but… what the heck are they? How do they actually work? Miriam joined Jason to teach and explore Container Queries in live code.

    see all Video posts