shell bypass 403
@mixin box-shadow($shadow...) {
@if $enable-shadows {
$result: ();
@if (length($shadow) == 1) {
// We can pass `@include box-shadow(none);`
$result: $shadow;
} @else {
// Filter to avoid invalid properties for example `box-shadow: none, 1px 1px black;`
@for $i from 1 through length($shadow) {
@if nth($shadow, $i) != "none" {
$result: append($result, nth($shadow, $i), "comma");
}
}
}
@if (length($result) > 0) {
box-shadow: $result;
}
}
}