sass - simple box mixin

sass-box-mixin.scss

$box-style1: 5px, solid, red;
$box-style2: (bStyle: dotted, bColor: blue, bWidth: medium);
 
@mixin boxy($bWidth, $bStyle, $bColor) {
  border-width: $bWidth;
  border-style: $bStyle;
  border-color: $bColor;
}
 
.first {
  @include boxy($box-style1...);
}
 
.second {
  @include boxy($box-style2...);
}