@mixin box-shadow($level: default, $color: default) {

@if $color == default {
  $color: #000;
}
@if $level == 0 {
  box-shadow: none;
}
@if $level == 1 or $level == default {
  box-shadow: 0 4px 8px rgba($color, .23), 0 1px 3px rgba($color, .08), 0 6px 12px rgba($color, .02);
}
@if $level == 2 {
  box-shadow: 0 8px 16px rgba($color, .23), 0 2px 6px rgba($color, .08), 0 12px 24px rgba($color, .02);
}

}

.box-shadow-1 {

@include box-shadow();

}

.box-shadow-2 {

@include box-shadow(2);

}