White line under nav bar

Dazzling
1

When i add colour to my header nav bar there is a thin white line at the bottom of it. I see the same line on the demo where there is colour for the menu elements.

Is there a way to get rid of this line?

2

To remove this gray line below navbar you can add this code to Theme Options - Other - Custom CSS

nav.navbar.navbar-default {
    border-bottom: none;
}