Once it’s supported everywhere: https://caniuse.com/?search=nested%20css

That’s a lot of red in usage-relative mode. I heard iOS updates are common even for older devices, but I do know macs can’t always update. So Safari Explorer might be a blocker for some time, once again.

> I heard iOS updates are common even for older devices, but I do know macs can’t always update. So Safari Explorer might be a blocker for some time, once again.

Probably not.

The oldest version of macOS that supports Safari 16.5 [1] which supports CSS Nesting is macOS 11 "Big Sur". Big Sur was released November 2020 and runs on Macs as old as the 2013 MacBook Pro.

So even Macs that are 10 years-old running an operating system from nearly 4-years ago will not only get CSS Nesting but tons of other new CSS features that shipped in the prior version, Safari 16.4 [2].

[1]: https://www.webkit.org/blog/14154/webkit-features-in-safari-...

[2]: https://webkit.org/blog/13966/webkit-features-in-safari-16-4...

That's good, guess things got a bit better. A few years ago we had a js big in Safari, but the newest Mac (mini I think, one of those that look like a set top box) we had in the company couldn't run a modern enough version of Safari.

The oldest iphone to get the new ios 17 (to be released this fall) was released in 2018. Thats 5 years out.

As for Macs, it doesn't matter. You can, and people will, install Chrome on them anyway.