brandozz - 12:49 pm on Nov 5, 2013 (gmt 0)
Styling the id selector should be avoided if you can, there are many drawbacks to styling the id. One being that if will cause you to have to be very specific with your classes and it's not reusable.
With that being said, the child list will inherit the styles of the parent regardless. I would give each one classes maybe "menu" and "submenu" and style from there.