New Values and Functions in CSS https://alvaromontoro.com/blog/68062/new-values-and-functions-in-CSS - gob-smacking things coming in CSS, detailed in this v nice article by @alvaromontoro
New Values and Functions in CSS

The CSS Working Group released the first Public Working Draft for the CSS Values and Units Module Level 5. It describes the common values and units that CSS properties accept and the syntax used for them, and it comes with some interesting new features. A review of some new functions and values that you will see in CSS (hopefully soon) :: Blog post at Alvaro Montoro's Personal Website.

@brucelawson @alvaromontoro It looks like the `random()` and `random-item()` functions make CSS non-deterministic now.

I'm still trying to process that.

It could randomise the order of displayed elements in flex and grid layouts.

SVG has pseudorandomness but you can set seed numbers so the randomness looks the same between page loads.

I noticed that the CSS functions don't have seeds.

That would make those elements impossible to check with visual regression testing.

Lots to think about...