Please slow down and stop panicking. You jump back and forth between resolved and disaster and you keep editing your post over and over.
I just looked at your site, and it looks fine to me, I see the menu and the sitemap.
If you are not seeing it correctly you may need to clear your browser cache (old css may be cached in your web browser) or go to Administration > Advanced Tools > Design Tools > Cache Tool and click the button to reset the skin guid. This will force all browsers to load the latest css.