3 /// Provides a concise, one-line method for setting `border-width` on specific
4 /// edges of a box. Use a `null` value to “skip” edges of the box with standard
7 /// @argument {list} $values
8 /// List of border widths; accepts CSS shorthand.
12 /// @include border-width(1em null 20px);
17 /// border-bottom-width: 20px;
18 /// border-top-width: 1em;
21 /// @require {mixin} _directional-property
23 @mixin border-width($values) {
24 @include _directional-property(border, width, $values);