How to style headers?

Question

css

Hey! I made up a site, for the headings h1 and h2 I set classes, for classes styles.
Seoshnik conveyed that it is not necessary to do this, they say write styles immediately for headings (that is, tags).
I didn’t manage to talk to him personally and hear the arguments why this is so ??
I decided to ask you, dear connoisseurs! =)

Answer 1

In my opinion, on the contrary, it is better to style classes, and not tags, it seems like the browser is faster to find a class. And I would send a SEO specialist without arguments to do SEO

Answer 2

The only argument is that there is text that is edited through a visual editor.
In other cases, the tag must be replaceable (h1, h2, div) and this should not affect the appearance that is hung on the class.