Hey! I was looking for this and I found a work around -
If your site is forced mobile on desktop you can do this -
take them out of folders and just make them links in the order you want them, and hhve the folder title be it's only link as it would be
then use .Mobile-overlay-nav-item:first-child{
; color: #ffffff;
}
with x-child being whatever number link it is
and change the color to whatever you want to be, to make a differentiation as folder header. I also bolded, and changed the font, but from there it is just whatever css you would use on the font.
I hope that helped out!!