Whether you are on an actual device or on the simulator firefox provides you with (cmd+alt+m) the navigation doesn't work on mobile devices at least not on iPhones and I have also tested on some android devices. I have tried it with your demo (http://enlight.lmsace.com) and when you are on mobile and want to display the drop down navigation (that works) but when you actually try to click on a sub-link (take the colors button for example) and once the dropdown opens no links are actually clickable.
Whether you are on an actual device or on the simulator firefox provides you with (cmd+alt+m) the navigation doesn't work on mobile devices at least not on iPhones and I have also tested on some android devices. I have tried it with your demo (http://enlight.lmsace.com) and when you are on mobile and want to display the drop down navigation (that works) but when you actually try to click on a sub-link (take the colors button for example) and once the dropdown opens no links are actually clickable.