HTML for babies.
The proof is in the comments. For example one commenter says “… After reading it once my 2 year old daughter designed her own web page. All she wants to do is code. I am so happy.” Another, “CSS for babies coming soon my Lord.” These coming from book titled HTML for Babies by author/dad John Vanden-heuvel to teach his infant son how to read. Note to myself. I’m barely able to text but I can read.