カラムの整列

flexbox 縦

col　rowにalign-items-start

col　rowにalign-items-start

col　rowにalign-items-start

col　rowにalign-items-center

col　rowにalign-items-center

col　rowにalign-items-center

col　rowにalign-items-end

col　rowにalign-items-end

col　rowにalign-items-end

flexbox 横

col row justify-content-start

col

col row justify-content-start

col

col row justify-content-end

col

col row justify-content-end

col

col row justify-content-end

col

ガター

row no-gutters

row no-gutters

no-container row no-gutters

no-container row no-gutters