Flexbug #11

https://github.com/philipwalton/flexbugs#11-min-and-max-size-declarations-are-ignored-when-wrapping-flex-items

In the demos below, items 1-4 should be split evenly across two rows. Flexbugs#11 says to use an explicit flex-basis, but border apparently does the same thing.

Default (broken in Safari)

Item 1
Item 2
Item 3
Item 4

Fixed with border: 1px solid

Item 1
Item 2
Item 3
Item 4

Fixed with flex-basis: 50%

Item 1
Item 2
Item 3
Item 4