What does it mean to say the html page is HTML5 complaint or not? As a team leader, I need to come up with the check points to validate if the templates or pages designed and developed conform to the HTML standards and semantics, so that I can document it and socialize it within the team.

I know there are HTML5 linting tools available on web, but I want to know what standards have to be checked for HTML5 specifications.

Thanks,
Mandar.