FlexBox justify-content DEMO

flex-start

Child 1

Child 2

Child 3

Child 4

flex-end

Child 1

Child 2

Child 3

Child 4

center

Child 1

Child 2

Child 3

Child 4

space-between

Child 1

Child 2

Child 3

Child 4

space-around

Child 1

Child 2

Child 3

Child 4