master flexbox

flex-flow

flex-direction flex-wrap

place-content

align-content justify-content

place-items

align-items justify-items

place-self

align-self justify-self

a a a a a a a a a a

ab ab ab ab ab ab ab ab ab ab

abc abc abc abc abc abc abc abc abc abc

a a a a a a a a a a

ab ab ab ab ab ab ab ab ab ab

abc abc abc abc abc abc abc abc abc abc

a a a a a a a a a a

ab ab ab ab ab ab ab ab ab ab

abc abc abc abc abc abc abc abc abc abc

a a a a a a a a a a

ab ab ab ab ab ab ab ab ab ab

abc abc abc abc abc abc abc abc abc abc

a a a a a a a a a a

ab ab ab ab ab ab ab ab ab ab

abc abc abc abc abc abc abc abc abc abc