CSS Test: Testing a mix of flex items with various values for
'writing-mode' / 'direction' in a vertical column-oriented flex container.
p b c
p e
p b c
p e
p b c
p e
p b c
p e
p b c
p e
p b c
p e
p b c
p e
p b c
p e
p b c
p e
p b c
p e
p b c
p e
p b c
p e