Cannot remove border ??

On this site (see private message) the sub menu items have a bottom border?? I have set 0px in all borders in the style - why is it still showing ??
 

Hi
it's a border bottom. You can edit it in the styling interface, or if you don't have it, then it comes from the theme
use the theme "blank" to avoir additionnal styles
CEd

Ah yes - the blank helped