Is there a way to create your own html tag in HTML5?

Question

I want to create something like

    
        aaa
        bbb
    
          


        

Answer 1

The point of HTML is that the tags included in the language have an agreed meaning, that everyone in the world can use and base decisions on - like default styling, or making links clickable, or submitting a form when you click on an .

Made-up tags like yours are great for humans (because we can learn English and thus know, or at least guess, what your tags mean), but not so good for machines.