HTML standard for scholarly publications ?

Hello,

I recently discovered your repository on Github which explains the syntax for a scholarly article in HTML. I am in charge of the conversion of documents for our publishing services and I wanted to know if the standards you explain are still up to date? The last update of the respository was 7 years ago so I'm wondering :-)

If it is no longer up to date, would you have a reference to recommend to me?

Best regards,
Robin