[jtickle]

I have seen this sentiment on HN a lot recently. Any good resources for that? I was quite the accomplished web developer 15-20 years ago and want to catch up without having to learn a new library or framework every six months.

[smac__]

https://www.manning.com/books/css-in-depth is an excellent option. This book helped fill in the gaps for me when it comes to modern CSS.