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! @keyframes animations can be strings Peter Kröner shared an interesting fact about @keyframes Read more…
TL;DR: We can center absolute-positioned elements in three lines of CSS. And it works on all browsers! .element { position: absolute; place-self: center; inset: 0; } Why? Well, that needs a longer answer. In recent years, CSS has brought a lot of new features that don’t necessarily allow us to Read more…
Ok, take a deep breath. We’ll have some fun understanding this vulnerability once you make sure your browser isn’t affected, using the table below. Chromium-based browser Am I safe? Google Chrome Ensure you’re running version 145.0.7632.75 or later. Go to Settings > About Chrome and check for updates. Microsoft Edge Read more…
You’re surely no stranger to bookmarks. The ability to favorite, save, or “bookmark” web pages has been a staple browser feature for decades. Browsers don’t just let you bookmark web pages, though. You can also bookmark JavaScript, allowing you to do so much more than merely save pages. A JavaScript Read more…
I got this interesting question in an SVG workshop: “What is the performance difference between an SVG loader and simply rotating an image for a loader?” The choice between Scalable Vector Graphics (SVG) and raster image loaders involves many factors like performance, aesthetics, and user experience. The short answer to Read more…
Just before we wrapped up 2025, I saw this proposal for :near(), a pseudo-class that would match if the pointer were to go near the element. By how much? Well, that would depend on the value of the <length> argument provided. Thomas Walichiewicz, who proposed :near(), suggests that it works Read more…
Here’s a really quick tip. You can think of Tailwind utilities as components — because you can literally make a card “component” out of Tailwind utilities. @utility card { border: 1px solid black; padding: 1rlh; } <div class=”card”> … </div> This blurs the line between “Components” and “Utilities” so we Read more…
Confession time: I’ve read about the performance benefits of scroll-timeline(), but when I see an impressive JavaScript scrollytelling site like this one, it makes me question if the performance of old-school, main-thread scrollytelling is all that bad. The other shoe drops when the creators of that site admit they “ran Read more…
Interop 2026 is formally a thing. So, you know all of those wild, new CSS features we’re always poking at but always putting under a “lack of browser support” caveat? The Big Three — Blink (Chrome/Edge), WebKit (Safari), and Mozilla (Firefox) — are working together to bring full and consistent Read more…
This issue of What’s !important is dedicated to our friends in the UK (aka me), 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 Read more…
