How to set menu items on mobile as stacked full-width items?
I've only used Responsive menus on one project and it seemed to work fine, outputting the mobile menus when viewed by a device, and the normal menu when viewed by computer with some margin of error but in general it seemed to work well. You can see a demo here: http://drastikbydesign.com/demo/responsive-menus-demo-1-mean-menu and how it shows on a mobile and/or computer.