Drop-down menu is behind revolution slider

Question

my website simfest has an issue with the drop-down menu, it is behind the "revolution slider".

I searched for answers, and all lead to z-index:xxx - now I am confused, because I have 47 lines with z-index:

Any idea on what line of code I need to modify?

Thank you!

Answer 1

.submenu {
  z-index: 9999;
}

and z-index: 0; for the revolution slider container.