Centred, absolutely positioned element looking good in all but Firefox7 for windows

Question

I have managed to get my absolutely positioned menu looking good in all but Firefox 7 for Windows (according to Browserlab).

http://chantalwholesalers.co.nz/wordpress/

The CSS:

#primary-menu {
    margin-right: -490px;
    position: absolute;
    right: 50%;
}

Not quite sure why it is different in just Firefox 7 for Windows? Also seem to have an issue with the footer, not sure if that is related.

Tips? Thanks!

Answer 1

All you need to do is clear you #container div.

#container { clear: both; }