Sub Menu Formatting

I am trying to format my sub menu.

The web site is collegefootballquest.com

Theme; Reaction

I have tried a number of things with no help. I have tried the following:

1) adding

#access {
background: #ffffff;
}

to the custom css section of the styling options of my theme.

2) I have also tried adding that language into the Simple Custom CSS plug in which I added for this purpose.

3) I have also tried to the editor to add this language to other files

4) I have tried to determine which actual css or php file to add this to

5) I also have options to add text to either “Title Attribute” and “CSS Classes ” options that I have where I create the menu in my theme.

Nothing I have tried has changed any of the formatting of the sub menu. I have also tried different versions of the above text in all of the same places.

Any advice on what actual files to change and where would be appreciated. I am attempting to change the background color and font color of all my sub menus. The easiest place to do this would be best.

Thanks in advance.