Yes, but you couldn’t have flyout menus if you did as there would be no way to calculate the position of the flyout. Because of this I haven’t included this functionality into the CSS generator.
No, there is no solution … unless you don’t mind not having flyouts in which case it should be fairly straightforward.
I don’t provide help with this sort of thing for free though sorry. I generally only write new code like that for our Premium Support members (https://geek.hellyer.kiwi/premium_support).