No graphic in plugin

Hi.

I have install yesterday the free verion to check, and the engine WORKS but doesn’t LOOK. I mean, I can’t control graphic. There is no colours, just pure numbers and text. On every browser is the same. Here You can see how it looks like:
http://www.iloveyou.pl/Wordpix/

Any suggestions Buddies what can be the reason? Thanks!

https://wordpress.org/plugins/showdown/