[Theme: PressPlay] Navigation bar styling

Hi,
We are using pressplay and would like to increase the height of the navigation bar, since the number of categories we have makes the last category start a new row (but it is NOT in a colored bar, just below the colored bar, so in the white area.)

Any help?

Thanks,
Debbie

http://www.plumpub.com/kaimen

http://ww.wp.xz.cn/extend/themes/pressplay/