Is CSS breaking the separations of concerns?


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Hello Reader,

This week, I’m formatting things a little differently because the comments on a YouTube video I posted got me a little riled up 😅.

So, starting with that video, I took a look at Temani Afif’s mind-blowing CSS-only graph theory CodePen.

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And while most people were pretty blown away by this as well, there were a fair number of comments about how this is breaking the separation of concerns and how CSS shouldn’t be able to do things like this.

To me, this is more about “this is doing what I’ve traditionally had to use JS for,” rather than “this is what JS should be used for,” and I went off on this idea over on the second channel.

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🙋‍♂️ What I've been up to this week

📺 F1 Website Championship

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As a life-long F1 fan, and the 2026 season starting next week, I decided to do an F1 website championship, where I pitted the teams against one another with rounds for design, performance, accessibility, and CSS.

The design rankings were my own opinions, but I used Lighthouse for the performance and accessibility scores, and Project Wallace for the CSS score.

Each round is scored using the F1 point system, and while not particularly educational, I had fun putting it together 😅.


⚡Instantly improve your transitions and animations with linear()

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A quick look at how we can instantly create better animations and transitions by using linear() timing functions (with the help of Easing Wizard).

🔗 Other awesome stuff from around the web

So in the video at the top people complained about CSS being too much of a programming language with it able to do some graph theory… don’t let them know Rebane made an entire x86 emulator using only CSS 😆.

🏁

Have a fantastic week!
Kevin


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Hi! I'm Kevin

Weekly newsletter, where I talk about tangentially-related front-end development topics and share what I've been up to in the last week, plus any cool/fun/interesting/useful links I come across as well.

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