[Oni]

I'd say make the background repeating on both the x and y, if you look at my profile for an example, it looks a bit silly.

I think "cover" would be better than "repeat".

Technically you're not doing cover anyways because the background-size is set to 100% 100%.

Code:

background-size: cover;

(not to say that looks better than 100% though)

That would be changed.