>It's ready. And if that leads you to the question of "well what about crappy old versions of IE?", well there's another interview question for you.
So what is the other interview question?
I really haven't dove into flex box because I am stuck supporting IE 9 on both of my projects. If I were to try and implement it on one of these projects it would be a wasted effort when 90% of my users are still using IE 9 on their corporate Dells.
How do you learn and develop new skills if your stuck supporting older browsers?
The question would be "how do you handle browsers that don't support flexbox?"
My answer would be to use Modernizr to detect lack of flexbox support and write some fallback styles.
If you're supporting an extremely higher than average percentage of users on IE 9, then it's worth basing decisions on this fact. Globally IE 9 accounts for 2.13% of usage and that number isn't going up.
There's no way to really learn this stuff other than to just start doing it. Just write fallback styles to support crappier browsers and remember that pixel-perfect designs across browsers was never a realistic goal.
So what is the other interview question?
I really haven't dove into flex box because I am stuck supporting IE 9 on both of my projects. If I were to try and implement it on one of these projects it would be a wasted effort when 90% of my users are still using IE 9 on their corporate Dells.
How do you learn and develop new skills if your stuck supporting older browsers?