How do I change the backdground color of shopping cart drawer and Modile view menu

Currently the shipping cart drawer and the menu on the mobile view have a transparent background. It is every confusing and doesn’t look professional. I want to change them both to have a white back ground. I’ve tried a few different cut and paste CSS codes but nothing does the the trick. The theme is refresh and the store is https://summerinspirationsgifts.com/

To set the background-color of the menu drawer on mobile:

Navigate to assets → component-menu-drawer.css and search for .menu-drawer. You’ll be able to change the background-color on line 37.