@include bg-variant('.bg-primary-op-alt', rgba($primary, .10));
@include bg-variant(".bg-yellow", $yellow-500);
@include bg-variant(".bg-yellow-dark", $yellow-600);
@include bg-variant(".bg-yellow-darker", $yellow-800);
@include bg-variant(".bg-yellow-light", $yellow-200);
@include bg-variant(".bg-yellow-lighter", $yellow-100);
@include bg-variant(".bg-success-lighter", $success-lighter);