I must be missing something, because I don’t really see where the issue is. It looks like everything is working as it should. You added a Halloween link, and it looks like you’ve added a submenu under it, which is the reason why it opens on the side. That’s correct right? Or where you trying to do something else?
I hope I’m not adding to your frustration for not understanding, but I do want to help you get this working 🙂