Actually, even IE10 has a fairly usable flexbox implementation, it's just based on a draft spec, so the property names and values are a bit weird.
Just avoid the old webkit draft (the only reason you'd consider it these days is for old <4.4 android phones) if you're working toward backwards compatibility, it's not worth the pain.
Just avoid the old webkit draft (the only reason you'd consider it these days is for old <4.4 android phones) if you're working toward backwards compatibility, it's not worth the pain.