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CSS now has an if() conditional function

CSS now has an if() conditional function

4 comments

·November 30, 2025
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stevefan1999

With the inclusion of branches, is it possible to say that CSS is now even more Turing-Complete? Now we just need to find ways to do recursion/targeted jumps so that it is finally recursive-enumerable

themafia

It's a great way to make conditional styles without having to use JavaScript; however, having used JS for years to make theme color and icon sets that rely on CSS properties, I'm not sure I particularly like this method. I feel like you have to smear a lot of logic across your CSS whereas with JS you can reduce your theme to a data structure and just have a simple function to setup all the CSS variables based on that.

Am I just an old man?

tantalor

https://developer.mozilla.org/en-US/docs/Web/CSS/Reference/V...

aanthonymax

This support has appeared in the new W3C specification.