Declaring same CSS class multiple time

Question

haha
haha

This (type 1) seems workable :-

.big_         


        

Answer 1

type 1 is actually very common when declaring multiple classes with some share the same attributes and some have their owned unique attributes. type 2 is a bit dirty to maintain while type 3 is similar to type 1.

it is all works, just a matter of coding style and ease of maintenance