Hi, Zen Cart community!

I have site http://fdt-dog-supplies.com/ with installed Responsive All Business Template. I want to show the categories of my products immediatly after clicking on the hamburger menu button, without additional click on "shopping" menu.
I see, that after click on the "shopping" menu, the class "hover" is added to the <li> tag. - https://monosnap.com/file/L7BjzzYzwK...18AdiYxlPzL4wY
Can I manually add this class in HTML? How to find this part of html? Or maybe are there other options for solutions?

Best regards!