The flex item properties are:
order
flex-grow
flex-shrink
flex-basis
The order property specifies the order of the flex items.
The flex-grow property specifies how much a flex item will grow relative to the rest of the flex items.
The flex-shrink property specifies how much a flex item will shrink relative to the rest of the flex items.
The flex-basis property specifies the initial length of a flex item.