Answers for "flex in css w3schools"

css flexbox syntax

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

flex property in css

The flex property is a shorthand property for:

flex-grow
flex-shrink
flex-basis