Html good practices - 2 spaces or 4?

Question

HTML

I didn’t manage to find information very well, like 2 spaces are used in google html / css styleguide, but as for template engines (symfony / twig, laravel / blade) - is it worth using these 2 spaces there?
PS I know that in each team you can set your own rules, I'm still interested in what is used more often.

Answer 1

You can use auto-formatting and not worry. Do what is comfortable for you

Answer 2

Almost everywhere there are two spaces, rarely four.
But sometimes there is exotic, like three o_O

Answer 3

Tabulation only! Only Tabs! :)