Three attributes of flex 2 -- flex-Basis

1. Let's take a look at several examples:
(1) width and flex-baiss are not set for each item. The element is displayed in the size of the content in flex.

(2) Only Set width = 100px (implicit flex-basis = auto) for the item01 element, and only set flex_basis = 250px (implicit width = auto) for the item02 element ), in item03, Set width = 50px and flex_basis = 140px at the same time.

2. Conclusion: item01 has a width of PX, item02 has a width of PX, and item03 has a width of PX.
   It can be seen that the width of the Flex item depends on flex-basis --> width --> content

Three attributes of flex 2 -- flex-Basis