_content-block.scss

// Content block

@mixin content-block($spacing: $line-height, $location: bottom ) {
  @if $location == top {
    margin-top: $spacing;

    &:first-child {
      margin-top: 0;
    }
  }
  @if $location == bottom {
    margin-bottom: $spacing;

    &:last-child {
      margin-bottom: 0;
    }
  }
}