css the mobile menu

I am having a really hard time changing the size of my titles in the mobile menu. i located the CSS but i cannot seem to change the font size.

.menu-item.menu-item-type-post_type.menu-item-object-page.menu-item-501{
	
}

please someone help me.

thank you

• This topic was modified 7 years, 10 months ago by Steven Stern (sterndata).

The page I need help with: [log in to see the link]