Problems with Dropdown

Sorry, my original post had too much code pasted into it. my apologies.
———————
Hi there… working on a new site for a client.

http://www.shrimpalliance.com/new/

Using a theme from a colleague who’s no longer around. Having problems with the drop down menu under “Issues”. I’ve included (what I believe is) the relevant CSS below.

http://pastebin.com/mngFY8Hi

thanks so much for any assistance!

Andrew