CSS Scope & Mixins
A chat with Chris Coyier
At the end of 2025,
Firefox added the CSS @scope rule –
making the new feature available
across all major browsers!
Since Chris Coyier has done
a fair amount of writing
and speaking on the topic,
we wanted to talk with him
about what that means.
Chris has also been writing
about the future of CSS mixins,
a new specification
Miriam is working on.
We answer questions,
get feedback,
and chat about where CSS is heading.















