.md-preloader {
    @each $key, $val in $colors {
        .pl-#{$key} {
            stroke: $val;
        }
    }

    &.pl-size-xl {
        width: 75px;
    }

    &.pl-size-l {
        width: 60px;
    }

    &.pl-size-md {
        width: 50px;
    }

    &.pl-size-sm {
        width: 40px;
    }

    &.pl-size-xs {
        width: 25px;
    }
}