Course Suggestion: Advanced CSS: Pseudoelements and the like

Hey there,
I’ve been really enjoying the CSS content here but I’d appreciate some more advanced content on things like pseudoelements etc.; I’ve been able to find some stuff to help de-squarify webpages with curves and angles and suchlike on CSS Tricks and Medium, etc., but it would be great to have a structured look at some of these topics on the platform. Also a bit of a deeper dive into CSS animations etc. would be fab. Maybe it’s already in the pipeline, but I would really enjoy the ability to get fully wonky with this stuff.