@mixin split-line($direction: default, $width: default, $color: default) {

@if $direction == default {
  $direction: top;
}
@if $color == default {
  $color: $border-color-l;
}
@if $width == default {
  $width: 1px;
}
border: 0 solid $color;
@if $direction == top {
  border-top-width: $width;
}
@if $direction == right {
  border-right-width: $width;
}
@if $direction == bottom {
  border-bottom-width: $width;
}
@if $direction == left {
  border-left-width: $width;
}

}