what are flexbox code example

Example 1: flexbox

Display: flex 
Flex-direction: row | row-reverse | column | column-reverse
align-self: flex-start | flex-end | center | baseline | stretch
justify-content: start |  center | space-between | space-around | space-evenly

Example 2: what does flex do

The flex CSS property sets how a flex item will grow or shrink to fit the space
available in its flex container. It is a shorthand for flex-grow , flex-shrink ,
and flex-basis .