CSS3-only horizontal drop line tab menu

A Skyrocket Labs demo

• Menu 1
  • Menu 1 Submenu item 1
  • Menu 1 Submenu item 2
  • Menu 1 Submenu item 3
• Menu 2
  • Menu 2 Submenu item 1
  • Menu 2 Submenu item 2
  • Menu 2 Submenu item 3
• Menu 3
  • Menu 3 Submenu item 1
  • Menu 3 Submenu item 2
  • Menu 3 Submenu item 3

See how you can include a panel directly underneath the menu.