I'm surprised at the comments. To the person that did this: Great job! This is very neat and shows the kind of boundaries you can push with CSS. So what if this is not practical per se, it does show that you can potentially do simpler things than this in pure CSS and that may, in fact, be practical in some cases. Seeing an example like this makes it abundantly clear that that simple of effect you might be wondering if is possible to do in CSS is definitely because clearly this exists.<p>Besides that, this is HackerNews; it's relevant.