Mohd Shad Mirza Declaring something best practice, no matter the authority, does not make it right. The MDN documentation is rather empty on supporting evidence: You should only use one <h1> per page. Using more than one will not result in an error, but using only one is seen as a best practice. It makes logical sense — <h1> is the most important heading, and tells you what the purpose of the overall page is. You wouldn't have a book with more than one title, or a movie with more than one name! Having a single top-level title is also arguably better for screenreader users, and SEO.