I’ve been using Foundation 6 for a project (actually, Webflow made me understand CSS so much better that projects with hand coding are easier) and realized they use flexbox for their grid system.
Webflow really needs a “push” and “pull” to reorder grids. It’s really important, but so far has not been implemented. Since flexbox natively supports reordering, a flexbox grid can easily tackle this without any hacks or complexity. I suggest taking a look at this.