// Focus state mixin @mixin focus-outline(
$width: $theme-focus-width, $style: $theme-focus-style, $color: $theme-focus-color, $offset: $theme-focus-offset
) {
$width: if($width == null, $theme-focus-width, $width); $style: if($style == null, $theme-focus-style, $style); $color: if($color == null, $theme-focus-color, $color); $offset: if($offset == null, $theme-focus-offset, $offset); outline: units($width) $style color($color); outline-offset: units($offset);
}