I will use the collapse menu in small devices like at the xtra small bootstrap menu.
But the problem is, i have different layouts for the small and the xtra small bootstrap grid system, therefore it is not a solution for me to change the device pixel when it will change to small.
I will just to use the navbar collapse which is at the xtra small version, at this time it gets automaticly hidden when i get over the xtra small width 768px.
I made it via own less file visible but it is just shown and the collapse functions to collapse in and collapse out are not given.
Thanks for help and i hope u understand my problem