Josh, thank you very much!

This was a good first step. Unfortunately, there still appear some things, I did not set…

For example, there are border lines between the menu entrys. Also I would like to change the font style.

First, there was the predefined background-color of the themes menu on the empty space (where no menu entrys are). I got rid of this with a small css entry:

.custom_menu {
    background: white;
    border-bottom: 1px solid black;

Also I created the bottom line in this css as you can see.

It would be great, if you could give me a hint, what I have to change to get it work as I want 🙂

There is supposed to be only the bottom border and I want to change the font style (bigger and without that shadow-effect it has now).

Cheers, Johannes