When the Direct2D engine in Firefox is enabled, some of the bold typeface font gets pretty weird. Has potential to screw up the links in the header (extremely apparent when using Linux's version of Direct2D for font smoothing).
The thing is though the upper level classes are going to be extremely hard. In my classes (upper level), we're told to build a program and that's all you get. Just the assignment. No book, no snips of code, no restrictions. You pick a language you like and make whatever it is you have to. This was from my previous semester: