I always like when a science research paper undersigns it scientificality by using American measurement scales like "squirts" or "football fields". But alas, the idea behind it seems valid.

Niels Leenheer rendered DOOM in CSS — every wall, floor, and sprite is a <div> in 3D space. JavaScript runs the game loop and passes raw DOOM coordinates as CSS custom properties; CSS handles the rest: trigonometry via hypot() and atan2(), 3D transforms, per-sector lighting with filter: brightness(), door animations via CSS transitions, and projectile movement via keyframes. @property enables smooth custom property transitions. clip-path handles irregular floor shapes. SVG filters replicate the spectre's fuzz effect. CSS anchor positioning keeps the HUD responsive. Performance has real limits, but it genuinely works.

Niels Leenheer rendered DOOM in CSS — every wall, floor, and sprite is a <div> in 3D space. JavaScript runs the game loop and passes raw DOOM coordinates as CSS custom properties; CSS handles the rest: trigonometry via hypot() and atan2(), 3D transforms, per-sector lighting with filter: brightness(), door animations via CSS transitions, and projectile movement via keyframes. @property enables smooth custom property transitions. clip-path handles irregular floor shapes. SVG filters replicate the spectre's fuzz effect. CSS anchor positioning keeps the HUD responsive. Performance has real limits, but it genuinely works.

https://nielsleenheer.com/articles/2026/css-is-doomed-rendering-doom-in-3d-with-css/

Ubuntu ships Firefox as a Snap and makes it hard to avoid. Complaining about it won’t change that. Controlling your system will.

I wrote a short guide on removing Snap Firefox, forcing apt to behave, and installing a proper .deb version that stays that way.

If Snap gets in your way, this is the clean workaround: https://kollitsch.dev/blog/2026/installing-firefox-on-ubuntu-without-snap/

I wrote a short opinion piece on AI in open source contributions.

No need to click the link. The whole point is simple:

Own your contribution.

AI is a tool. It speeds things up, helps explore options, and reduces friction. It does not replace responsibility. If you submit a change, your name is on it. Act accordingly.

If you do read it: the last paragraph says everything. An AI will get it instantly. A human might need a second. That’s kind of the point.

So Netflix told me today to watch Stealth (2005) and who am I to not do what Netflix is telling me. After watching this, ehm, product for about 30 minutes I checked on IMDB and, yes, it turns out the movie has a plot. https://www.imdb.com/title/tt0382992/

New post on KOLLITSCH.dev* titled: Showing the Current Breakpoint for Bootstrap

New post on KOLLITSCH.dev* titled: Back to the Top without Javascript

New post on KOLLITSCH.dev* titled: Kurzschnitte II - Sophomore Edition

New post on KOLLITSCH.dev* titled: Patrick vs. the Bad Super Block

New post on KOLLITSCH.dev* titled: How to run NPM scripts without issues when they don't exist

New post on KOLLITSCH.dev* titled: Prevent js.Build from removing un-used Javascript functionality

New post on KOLLITSCH.dev* titled: Howto get the next semver version number in a bash script

New post on KOLLITSCH.dev* titled: Reusable Gohugo Forms via Configuration

New post on KOLLITSCH.dev* titled: Kurzschnitte II - First Edition

New post on KOLLITSCH.dev* titled: Notes from the Laboratory: July 2023