I need to change the color of the header that contains the menu. How do I do it? Now it’s black I’d like it to be white and the letters of the menu in black.
Also when I first enter any page of my website (except the home page) appears a white line and then when I scroll down disappears, I need it to disappear completely, that is, not to be seen at any time.
Attached a screenshot
and the link of my web for the review in greater detail :