--- /dev/null
+@charset "UTF-8";
+
+/// Provides a concise, one-line method for setting `border-style` on specific
+/// edges of a box. Use a `null` value to “skip” edges of the box with standard
+/// CSS shorthand.
+///
+/// @argument {list} $values
+/// List of border styles; accepts CSS shorthand.
+///
+/// @example scss
+/// .element {
+/// @include border-style(dashed null solid);
+/// }
+///
+/// // CSS Output
+/// .element {
+/// border-bottom-style: solid;
+/// border-top-style: dashed;
+/// }
+///
+/// @require {mixin} _directional-property
+
+@mixin border-style($values) {
+ @include _directional-property(border, style, $values);
+}