Thanks Patrick, this helped a lot!
Question, do you know how to target a specific field? Example, lets say i have 3 text fields that are all required labeled width, length, height but i didn't want to use the generic error message, I want the error message to be specific like "please enter the correct width" or height, or length.
would you use the ID of that field (id="element_41")? and if so, how would you write that out?