CSS menu question – different styling on sublevels possible?

Hi all

On https://philipus.com I have a CSS menu in the footer which has submenus connected to the Galleries and Wallpapers links which are displayed above these links.

I have trouble centering the items in the two sub-menus. You’ll see that the items in the Galleries sub-menu should be a bit to the left. And the items in the Wallpapers sub-menu should be a lot to the right.

I thought I could, perhaps, define classes for each sub-menu and then style each class with margins, padding etc so that the sub-menus’ items appear more horizontally centered.

Is this possible at all for two submenus which are on the same level? And if so, how can I do it?

Is there some other way to center the items in the submenus?

Thanks in advance for your help
/p