main navigation on more than 2 columns

Hi,

It seems that the menu items on my site (http://atelier35arhiva.ro/) are displayed on 2 columns. I would like them to display like a one line menu(1 row, several columns), like it can be seen on this website: http://braceroarchive.org/.

Please, can you help me with advice on this issue?

sorry for the trouble - I found the answer to my question, it was right there in the css file:).