Definitely the most creative code I'll be seeing this week! I realize this is really bad practice and likely to be fixed since it can be used for tracking users, but: are there any advantages to using CSS over Javascript, in theory?
You know, that HTTP allows websites to "track" you each time you visit them, right? The horror!
That being said, if one is THAT worried about tracking then one should not be on the modern web, and should probably stick to using Lynx over TOR.