min-block-size CSS property defines the minimum horizontal or vertical size of an element's block, depending on its writing mode. It corresponds to either the
min-width or the
min-height property, depending on the value of
If the writing mode is vertically oriented, the value of
min-block-size relates to the minimum width of the element; otherwise, it relates to the minimum height of the element. A related property is
min-inline-size, which defines the other dimension of the element.