How to remove an extra line under the menu?

Question

css

How to remove the white bar under the menu?

Answer 1

"Chatter is worth nothing, show us the code."
We are not psychics and not programmers to determine the reason for the appearance of the strip from the picture.
Most likely it's the margin and padding.

Answer 2

Yazhprogammist (and a psychic and a little), I remove the "extra line" without looking at the code.