Mantra menu font settings

I am using Mantra https://mycarehome.ca/wordpress/room_availability/ This is a simple one page site as an add on to an existing site so that it can be edited by someone else. The idea is make the one page as similar to the original site as possible (which you can see using the links). I am having a problem with the side menu as I cannot seem to make the menu font as well as “decoration” appear as it should.
Thanks!