> Flexbox is awesome. No need for grid framework; Yes, great, if you can ignore all the IE users. Is that what "modern" means? I'd love to use flexbox where I work, but it's just not feasible to give up all the customers we would lose.
It is not as feature-rich as flexbox is but it works great - I built a similar one when I used to work at Yelp https://www.yelp.com/styleguide#section-arrange and it scales well.