direction: LTR | align-content: 'center'

direction: LTR | align-content: 'left'

direction: LTR | align-content: 'right'

direction: LTR | align-content: 'start'

direction: LTR | align-content: 'end'

direction: LTR | align-content: 'flex-start'

direction: LTR | align-content: 'flex-end

direction: LTR | align-content: 'auto' (resolved to 'start')

direction: RTL | align-content: 'center'

direction: RTL | align-content: 'left'

direction: RTL | align-content: 'right'

direction: RTL | align-content: 'start'

direction: RTL | align-content: 'end'