Now [Andy Green] has extended the possibilities with affordable silicon, by producing a proof-of-concept HTML + CSS renderer over h2 on ESP32 for libwebsockets.

Where to learn HTML and CSS online depends on your goals and preferred learning style, experts say, as courses vary in length, cost and structure.

HTML and CSS are basic languages which every developers knows about. Still their are ways where you can improve your skills in both of them to enhance your work.

jsFiddle lets developers play with the three core elements of Web development. Check out this powerful application for rapid prototyping and testing.