In the book, the outsiders, what were'' fair'' rules for a gang fight? What did'' fair'' mean? How are the rules established?

A fair fight means only fists no weapons, by time and common sense is how the rules were established

We just read this book so it depends on if the Socs and Greasers or S v. S or G v. G. For S v. G there were certain things that both groups couldn't do. The rules were established by both groups agreeing.