Flex values in IE11

Today I Learned:

IE11 doesn't handle flex values in the same way that newer browsers do. Normally the value flex: 1 is a shorthand for flex-grow: 1. But in IE11, that affects the flex-basis, and it was throwing my sizing off.

I thought using the flex shorthand would be safe, and I normally consider shorthand an anti-pattern, since it makes refactors or overrides harder. But you never know what you'll find in Internet Explorer!