Hi,
here is my temp site, i try to add a other item to the menu, but having problem with last element who is not on the same lign, see here :
btfl.info/TATV5/

Hello Mr. Olivier,

This is happening because of the proportion of the width we have setup for this template. This prevents your menu to expand further.
Open index.php of the template and make the following change.
Locate the element with these classes "logoArea column four alpha mobile-four" and replace the four with three.
Then locate the element with classes "mainNavigation column eight omega" and replace the eight with nine.

Thank you.