1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20
@mixin _inner(...) { $width: null !default; $height: null !default; color: $color; background: $background; border: $border; @if $width { width: $width; } @if $height { width: $height; } } @mixin varargs(...) { $color: green; $background: red !default; @include _inner(...); }