Need help with sub-menu styling

Hi,

I'm wondering if something is overriding the sub-menu CSS I'm inserting on this site http://www.friendsindeedpas.org/fid

Per another thread here I've inserted:

.sub-menu {
position: relative;
top: 70px !important;
}
.sub-menu li {
background: #f2adae !important;
width: 100% !important;
}

(These aren't the values that I want but I just copied the code to get the ball rolling).

No adjustments that I make to the above code seem to effect the sub menu at all (under the first two menu items on this page "WHO WE ARE" and "WHAT WE DO".

Is there some kind of setting in place which is overriding this code?

(Bonus points for the right code to adjust the background color of the current sub-menu item.)

Thanks!

R