How to change words styles such as calibri and other styles by using only HTML tags no css or other

Answer 1

And for being sure that the user can display the custom font, you need to provide it at upload: this is done with css too, anyway ^^

Answer 2

In order to change the font style, you will need to either use css on external, or inside the bracked like so:
<h1 style="font: calibri"></h1>

Answer 3

thnx