
Welcome to the inaugural What’s !important, a roundup of the top CSS and web development updates from the past fortnight. If you’re short on time or can’t bear to miss out on anything CSS-related, this is your recap hub:
- top CSS/web dev articles from across the web,
- noteworthy announcements and quick-read links we shared,
- the latest from Chrome, Firefox, and Safari,
- and possibly more.
Let’s dive in!
HTMHell Advent Calendar 2025
Manuel Matuzović has crafted a fun HTMHell Advent Calendar 2025 featuring 24 HTML-focused articles — one for each day until Christmas. We’re already 16 articles in, promising 8 more treats. A standout for me is the article on Invoker Commands, now supported in all web browsers, making it a double win!


