Html5 validation?

Question

HTML

I welcome the question about the validation of this design, what's wrong? https://jsfiddle.net/pz3c9z6m/ The validator scolds multiple headers, although everything is in the general section, and then in the article, it does not give an error, but a warning.

Answer 1

Yes, something terrible
stackoverflow.com/questions/25996074/w3c-validatio...

Answer 2

you have at least two h1 headings