@mixin mu-border-width(
  $pseudo: (),
  $responsive: (),
  $values: (
    0: 0,
    2: 2px,
    4: 4px,
    8: 8px
  )
) {
  @include mu-create-utility(
    u-border,
    (
      border-width: 1px
    ),
    $pseudo,
    $responsive
  );
  @include mu-create-utility(
    u-border-t,
    (
      border-top-width: 1px
    ),
    $pseudo,
    $responsive
  );
  @include mu-create-utility(
    u-border-r,
    (
      border-right-width: 1px
    ),
    $pseudo,
    $responsive
  );
  @include mu-create-utility(
    u-border-b,
    (
      border-bottom-width: 1px
    ),
    $pseudo,
    $responsive
  );
  @include mu-create-utility(
    u-border-l,
    (
      border-left-width: 1px
    ),
    $pseudo,
    $responsive
  );
  @each $key, $value in $values {
    @include mu-create-utility(
      u-border-#{$key},
      (
        border-width: $value
      ),
      $pseudo,
      $responsive
    );
    @include mu-create-utility(
      u-border-t-#{$key},
      (
        border-top-width: $value
      ),
      $pseudo,
      $responsive
    );
    @include mu-create-utility(
      u-border-r-#{$key},
      (
        border-right-width: $value
      ),
      $pseudo,
      $responsive
    );
    @include mu-create-utility(
      u-border-b-#{$key},
      (
        border-bottom-width: $value
      ),
      $pseudo,
      $responsive
    );
    @include mu-create-utility(
      u-border-l-#{$key},
      (
        border-left-width: $value
      ),
      $pseudo,
      $responsive
    );
  }
}

@mixin u-border-width(
  $responsive: false,
  $pseudo: false,
  $values: (
    0: 0,
    2: 2px,
    4: 4px,
    8: 8px
  )
) {
  .u-border {
    @include ruleset($responsive) {
      border-width: 1px;
      @include pseudo-variants($pseudo);
    }
    &-t {
      @include ruleset($responsive) {
        border-top-width: 1px;
        @include pseudo-variants($pseudo);
      }
    }
    &-r {
      @include ruleset($responsive) {
        border-right-width: 1px;
        @include pseudo-variants($pseudo);
      }
    }
    &-l {
      @include ruleset($responsive) {
        border-left-width: 1px;
        @include pseudo-variants($pseudo);
      }
    }
    &-b {
      @include ruleset($responsive) {
        border-bottom-width: 1px;
        @include pseudo-variants($pseudo);
      }
    }
    @each $key, $value in $values {
      &-#{$key} {
        @include ruleset($responsive) {
          border-width: $value;
          @include pseudo-variants($pseudo);
        }
      }
      &-t-#{$key} {
        @include ruleset($responsive) {
          border-top-width: $value;
          @include pseudo-variants($pseudo);
        }
      }
      &-r-#{$key} {
        @include ruleset($responsive) {
          border-right-width: $value;
          @include pseudo-variants($pseudo);
        }
      }
      &-l-#{$key} {
        @include ruleset($responsive) {
          border-left-width: $value;
          @include pseudo-variants($pseudo);
        }
      }
      &-b-#{$key} {
        @include ruleset($responsive) {
          border-bottom-width: $value;
          @include pseudo-variants($pseudo);
        }
      }
    }
  }
}