How to find out in which file class= is registered?

Question

HTML

Please tell me how to find in which file a certain class = "" is registered.
Perhaps there is some kind of editor for coding where, when hovering over a class, a place is displayed where it can be edited. Preferably a free editor.

Answer 1

Try to open the site through Chrome and look through the developer tools against the class you need should be the full path to it