I feel dumb for having been a web programmer for so long and not knowing the answer to this question, I actually hope it\'s possible and I just didn\'t know about rather tha
I ran into this same problem and ended up using a JQuery solution to make it seem like a class can inherit other classes.
This will find all elements with the class "composite" and add the classes "something" and "else" to the elements. So something like ... will end up like so: ...
...