CSS Live Cheat sheets — is a live Codepen Cheat sheets that help you to learn the CSS pitfalls
I'm a teacher who helps to learn CSS. I teach people with different knowledge and backgrounds. Students, accountants, kindergarten teachers, developers, etc were my students. I was able to help all of them to level up their CSS skill. Also, I'm the author of a few online boot camps, a speaker at conferences and meetups and a content creator. You can read what my readers say.
The materials herein are all Stas Melnikov.