Thank you so much for taking the effort explaining this.
Works well 
Hi everyone, sorry my english but I use a translator …
I had this idea to have a vertical menu:
I created a “list” class to apply to all “list item” elements
and I got this result:
using the tools to manage the columns you can move the menus at will
I do not seem to have found this solution in the forum, in case it is a repetition I apologize to everyone.
and thanks for the help you give every day!
Mauro
A video explanation will come in handy.
I have to redo a website that I made with muse for a client who requested the same header, so I had to look for a method to make the vertical menu, which was part of the nav toggle.
With difficulty I managed to have this result:
http://www.maurodimassimo.it/selvagge/index.html
I like the cleanness of the web, the vertical menu is realmnet easy, just place a normal menu and add a fixed class and ready that will automatically make the menu turn vertical, I saw that they placed the code above! That will help you.
I like the typography of your site.
Cheers
thank you 