A rather geeky/technical weblog, est. 2001, by Bramus
width or height no longer forces a Main Thread animation (in Chrome, under the right conditions)
When their values don’t change throughout the animation, CSS width / height animations can run on the Compositor, instead of being forced to run on the Main Thread.
@starting-style
How the cascade, the animation-fill-mode, and implicit keyframes make things a bit more complicated then you’d initially think …
I built something that I needed into DevTools: debugging support for CSS @starting-style rules.
The CSS Podcast is back! Together with Una I’m co-hosting season 5 of the show, and we have some good episodes coming your way …
Check out the post I wrote for developer.chrome.com to learn what changed for View Transitions in 2025.
--light-dark() function in CSS that works with any type of value (not just colors!) in just 3 LOC
A new View Transitions-related feature we shipped in Chrome 140 is the ability to nest ::view-transition-group() pseudos. This is useful for retaining visual effects such as clipping, move elements as part of a group, etc.
If you thought we were done with View Transitions, guess again! A feature Chrome is working on, is “Scoped View Transitions”, which allow you to scope a VT to a subtree of the DOM. We are actively looking for feedback on this one.
