Responsiveness issue with navigation

[Former user]

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.