J-BusinessDirectory - Adjust menu font attributes of main menu items

I am using the J-BusinessDirectory template and extension and I would like to change the font size and other attributes of the main menu items but I having difficulty identifying the correct class selector.I have looked at the template.css and am unable to pick which class is the correct class to change, and it doesn't appear this option is available in the main template typography options to adjust without going in to the css.I'm new to template overrides, if this is the way I should go about doing this so any help you can provide (point me to documentation) that explains this would be greatly appreciated.

Thanks

Paul

Hi,

There is no need for template overrides, that is something else.
By default the template comes with less active. That means that all changes must be performed in less folder. Every time when the page is loaded the css in css folder is rewritten.
The class for menu item is sp-menu-item  and can be located on less/menu.less.
The template changes you can modify theme.less file.

could indicate which route to make these changes