I'd think the former would typically (depending on how many times the class is re-used) use more bandwidth, if anything, since it still requires the framework t

I'd think the former would typically (depending on how many times the class is re-used) use more bandwidth, if anything, since it still requires the framework to define the `w-32 h-32` class attributes elsewhere using the more verbose identifiers. Plus the overhead for an additional request if that class definition happens in an external style sheet.