Thread:Project:Support desk/Vector Skin: Remove border around tabs

Good evening. I need some help doing some edits to a Vector.css for my wiki, theatremush.com.

The tabs at the top (edit, etc.), I need to remove or make transparent the borders around them. I've managed to remove the left hand ones but the right hand will not disappear no matter what I adjust. I've even used the inspect element option to try to find the baseline, but I haven't had any success.

The couple of wikis that I can find that have no borders like that, I can't really decipher how they've done it. Any help would be appreciated.