A: The license is MIT Open Source.
A: Flexify supports latest versions of modern browsers.
A: Microsoft does not support Internet Explorer 10 and below anymore. The percentage of old IE usage is about few percants and decresing. It does not worth it to maintain these browsers anymore.
A: I was using Bootstrap for a long time and was pretty happy about it. But there are some thisng I missed in Bootstrap: support for flexbox, CSS dropdown menu which works on hover and not on click, etc. Every classname in Flexify is prefixed with [fx-] prefix for avoiding conflicts with other frameworks/libraries. You may use Flexify with another framework on the same project.
A: Flexbox provides simpler and more flexible layout options in CSS. More specifically, it provides: