Comment by demetris

I didn’t pay close attention to the domain and I thought it was the other one:

https://moderncss.dev/

One of the best educational resources for modern CSS.

BTW, one of the reasons I love modern CSS is front-end performance. Among other things, it allows you to make smaller DOMs.

I talk about a modern CSS technique that does that here:

https://op111.net/posts/2023/08/lean-html-markup-with-modern...

It is an idea I started playing with when custom properties landed in browsers, around 2016 or 2017? Around 2021 I started using the technique in client sites too.

Now I want to write a 2026 version of the post that talks about container queries too. The technique becomes more powerful if you can rely on container queries and on the cqw unit. (You cannot always. That stuff is still new.)

For an example of the convenience cqw offers if you can rely on it, see the snippets I have in this:

https://omnicarousel.dev/docs/css-tips-know-your-width/