Developers have been experimenting with HTML-in-Canvas, a hexagonal world map-analytics feature, a web-based OS for e-ink devices, replacing image sources using the content property, and more. This is What’s !important #10.
This issue of What’s !important brings you clip-path jigsaws, a view transitions toolkit, name-only containers, the usual roundup of new, notable web platform features, and more.
These are the historical pranks I consider the top 10 most noteworthy, rather than the “best.” You’ll see that some of them crossed the line and/or backfired.
Short n’ sweet but ever so neat, this issue covers light/dark favicons, @mixin, anchor-interpolated morphing, object-view-box, new web features, and more.
Despite what’s been a sleepy couple of weeks for new Web Platform Features, we have an issue of What’s !important that’s prrrretty jam-packed. The web community had a lot to say, it seems, so fasten your seatbelts!
Read an explanation of the recent CVE-2026-2441 vulnerability that was labeled a "CSS exploit" that "allowed a remote attacker to execute arbitrary code inside a sandbox via a crafted HTML page."
Interop 2026 is officially a thing and there's plenty of new (and even old) CSS features that we can look forward to being cross-browser compatible and consistent!
This issue of What’s !important is dedicated to our friends in the UK, who are currently experiencing a very miserable 43-day rain streak. Presenting: the five most interesting things to read about CSS from the last couple of weeks. Plus, the latest features from Chrome 145, and anything else you might’ve missed. TL;DR: lots of content, but also lots of rain.