spaces

xxs-responsive

xs-responsive

xs-responsive-24

sm-responsive

sm-responsive-40

md-responsive

lg-responsive

xl-responsive

xxl-responsive

xxs-fix

xs-fix

xs-fix-24

sm-fix

sm-fix-40

md-fix

lg-fix

xl-fix

xxl-fix

dealing with collapsed margins

d-flex flex-column

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