Sizing utlities to control the size of an element.
.h-{sm|md|lg|xl}-{25|50|75|100|125|150|auto} - controls the height of an element in %.
.w-{sm|md|lg|xl}-{25|50|75|100|125|150|auto} - controls the width of an element in %.
.mw-{sm|md|lg|xl}-{25|50|75|100|125|150|auto} - controls the max width of an element in %.
.vh-{sm|md|lg|xl}-{25|50|75|100|125|150|auto} - controls the height of an element in vh.
.vw-{sm|md|lg|xl}-{25|50|75|100|125|150|auto} - controls the width of an element in vw.
.max-vw-100 - sets the max width of an element to 100vw.