It's looks cool, and it's great to see your learning CSS, but it still needs a lot of help. I guess the green and black colour scheme does look a little cool, but the blank black does make it seem very big and empty, so I guess I would change the width and hight if you can. Also, I probably replace those sprites with ones that don't go with 96x96(?) thing, as it takes up a lot of space and it looks like Amoonguss and Audino are floating. I'm going to give you a 5/10 at the moment but I know you can improve loads.