@each $strength, $color in $box-shadow-strengths {

    @each $direction, $pixels in $box-shadow-directions {
        .bs-#{$direction}-#{$strength} {
            box-shadow: $pixels $color;
        }
    }

    @each $direction, $pixels in $text-shadow-directions {
        .ts-#{$direction}-#{$strength} {
            text-shadow: $pixels $color;
        }
    }

}