Christopher

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CSS is DOOMed!

I've build DOOM in CSS and every wall, floor, barrel, and imp is a div, positioned in 3D space using CSS transforms.

https://cssdoom.wtf

Try it out! But... not every browser can handle it. This is taking the browser to its limit. Chrome has some issues. Safari too. Bugs will be filed.

CSS subgrid solves the hardest grid alignment problems 🏗️

Child elements can participate in the parent grid — aligning across components without hacks.

grid-template-columns: subgrid;
grid-template-rows: subgrid;

Baseline 2023 ✅

Learn more 👇
https://developer.mozilla.org/en-US/docs/Web/CSS/CSS_grid_layout/Subgrid

Subgrid - CSS | MDN

The CSS grid layout module includes a subgrid value for grid-template-columns and grid-template-rows. This guide details what subgrid does and gives some use cases and design patterns that the feature solves.

MDN Web Docs
hasUAVisualTransition landed in Firefox 149, making it available across all major engines. As well as having a very catchy name, it lets you avoid doubling up on page transitions. Here's how it works:
Folks who are interested in popover=hint: have a play with https://random-stuff.jakearchibald.com/popover-hint/ and tell me anything that doesn't make sense. Or watch this:
The CloseWatcher API landed in Firefox 149, making it easy to listen for platform-specific 'dismiss' signals. Here's how it works:

RE: https://mastodon.world/@webstandards/116289510061373658

Do you want this talk at your event? Either in this format or just one half (issues with compliance/examples of good game accessibility). Email accessibility AT kitation co uk

Firefox 149 is out now, and adds bunch of new web platform features, such as:

🎉 The CloseWatcher API
🎉 popover=hint (although I'm concerned about the spec'd behaviour)
🎉 hasUAVisualTransition on PopStateEvent
🎉 font-family: math
🎉 The CSP reporting API

And more!

https://developer.mozilla.org/en-US/docs/Mozilla/Firefox/Releases/149

Firefox 149 release notes for developers (Stable) - Mozilla | MDN

This article provides information about the changes in Firefox 149 that affect developers. Firefox 149 was released on March 24, 2026.

MDN Web Docs
"We use debian, that should be age verification enough"
Donald Trump hat sich das Öl in Venezuela gekrallt und dann den Ölpreis im Iran explodieren lassen. So geniale Geschäftsmänner brauchen wir in der Politik. Da sieht man wie Wirtschaftskompetenz zu Wohlstand führt und nicht Berufspolitiker die noch nie einen Interessenskonflikt hatten.

Dear Malta Gaming Authority,
Yes, I hacked you, and the data obtained has been shared with media partners, authorities,….

And yes, we will expose the organized crime enablement schemes you created while presenting yourselves as a “legitimate public service”.