Is it good time to switch to CSS Grid Layout frameworks such as Blueprint CSS? How is good/bad as compared to Flexbox?

what i normally do is go with grid in order to reduce a 2-dimension page to a bunch of contexts i can then easily handle and refine with flex

IMHO they come together, there's no "this XOR that"

i don't know much about blueprint, but if you take the grid road, don't forget a fallback css for IE and older versions of chrome/FF

@thatsnotnice understood, fallback CSS seems a good idea for legacy browser

Css grid and flex are really nice and widely supported nowadays. Why use a framework for it?

@thatsnotnice why keep supporting IE. Even MS doesnt support it anymore...

@Codex404 why not?

It's not only about IE, a lot of browsers added support gradually. For full support of grid we're about 85% worldwide now. A missing 15% is still worth the effort IMHO, and the good thing about frameworks is that they come with premade fillers