I just added my menus and that is working but they are the common blue with an underline. So I wanted to give them another color etc.
You can do that with the .nav-item in css. But when i do that:
.menu-item{
color: #fafafa;
}
It is not showing and the inspector shows this:
I have no idea what this means but I think the browser isn't reading this. How can I fix this problem?

nav .menu-itemnav .menu-itemis just an example. I am not aware of what code you are using. If you can show me your webpage, I can give you the exact code needed.