To see just how far CSS can be taken, head over to Codepen and look for the portfolio of Ben Evans, who goes by the handle @ivorjetski. Evans is a serious CSS artist from the United Kingdom, and he has previously made waves with artistic projects such as landscapes, photo-realistic portraits, still life "paintings," and simple animations. His most impressive CSS pieces qualify as works of art, and this is probably the reason Evans felt compelled to create an online gallery to showcase his CSS prowess.
With modern browsers, broadband connections, and advanced hardware, it seems as if there is nothing that CSS cannot handle. Photo-realistic CSS images have been around for a few years, and we have also seen a couple of pure CSS games, but they are mostly on the simple side. The art gallery coded by Evans is nothing short of amazing, and it even features cool interactions such as a fully functional light switch.