biofriction-wp-theme/node_modules/foundation-sites/scss/prototype/_spacing.scss

// Foundation for Sites by ZURB
// foundation.zurb.com
// Licensed under MIT Open Source

////
/// @group prototype-spacing
////

/// Responsive breakpoints for spacing classes (margin and padding)
/// @type Boolean
$prototype-spacing-breakpoints: $global-prototype-breakpoints !default;

/// Default number of spacers count (margin and padding)
/// @type Number
$prototype-spacers-count: 3 !default;

/// Margin helper mixin, all the values are multiplied by `$global-margin` which by default is equal to `1rem`
/// @param {Number} $top [null] - Margin Top
/// @param {Number} $right [null] - Margin Right
/// @param {Number} $bottom [null] - Margin Bottom
/// @param {Number} $left [null] - Margin Left
@mixin margin(
  $top: null,
  $right: null,
  $bottom: null,
  $left: null
) {
  @if $top != null {
    margin-top: $top * $global-margin !important;
  }
  @if $right != null {
    margin-right: $right * $global-margin !important;
  }
  @if $bottom != null {
    margin-bottom: $bottom * $global-margin !important;
  }
  @if $left != null {
    margin-left: $left * $global-margin !important;
  }
}

/// Padding helper mixin, all the values are multiplied by `$global-padding` which by default is equal to `1rem`
/// @param {Number} $top [null] - Padding Top
/// @param {Number} $right [null] - Padding Right
/// @param {Number} $bottom [null] - Padding Bottom
/// @param {Number} $left [null] - Padding Left
@mixin padding(
  $top: null,
  $right: null,
  $bottom: null,
  $left: null
) {
  @if $top != null {
    padding-top: $top * $global-padding !important;
  }
  @if $right != null {
    padding-right: $right * $global-padding !important;
  }
  @if $bottom != null {
    padding-bottom: $bottom * $global-padding !important;
  }
  @if $left != null {
    padding-left: $left * $global-padding !important;
  }
}

/// Margin classes for specific direction properties
/// @param {String} $dir [] Direction
/// @param {Number} $spacer [] Spacer
@mixin margin-direction($dir, $spacer) {
  @if ($dir == top) { 
    @include margin($top: $spacer); 
  }
  @else if ($dir == right) { 
    @include margin($right: $spacer); 
  }
  @else if ($dir == bottom) { 
    @include margin($bottom: $spacer); 
  }
  @else if ($dir == left) { 
    @include margin($left: $spacer); 
  }
  @else if ($dir == horizontal) { 
    @include margin($right: $spacer, $left: $spacer); 
  }
  @else if ($dir == vertical) { 
    @include margin($top: $spacer, $bottom: $spacer); 
  }
}

/// Padding classes for specific direction properties
/// @param {String} $dir [] Direction
/// @param {Number} $spacer [] Spacer
@mixin padding-direction($dir, $spacer) {
  @if ($dir == top) { 
    @include padding($top: $spacer); 
  }
  @else if ($dir == right) { 
    @include padding($right: $spacer); 
  }
  @else if ($dir == bottom) { 
    @include padding($bottom: $spacer); 
  }
  @else if ($dir == left) { 
    @include padding($left: $spacer); 
  }
  @else if ($dir == horizontal) { 
    @include padding($right: $spacer, $left: $spacer); 
  }
  @else if ($dir == vertical) { 
    @include padding($top: $spacer, $bottom: $spacer); 
  }
}

@mixin foundation-prototype-spacing {
  @for $spacer from 0 through $prototype-spacers-count {
    
    @each $prop in (margin, padding) {
      // All Sides
      .#{$prop}-#{$spacer} {
        @if ($prop == margin) { 
          margin: $spacer * $global-margin; 
        }
        @else if ($prop == padding) { 
          padding: $spacer * $global-padding; 
        }
      }

      @each $dir in (top, right, bottom, left, horizontal, vertical) {
        // Top Side
        .#{$prop}-#{$dir}-#{$spacer} {
          @if ($prop == margin) { 
            @include margin-direction($dir, $spacer);
          }
          @else if ($prop == padding) {
            @include padding-direction($dir, $spacer);
          }
        }
      }
    }

    @if ($prototype-spacing-breakpoints) {
    // Loop through Responsive Breakpoints
      @each $size in $breakpoint-classes {
        @include breakpoint($size) {
          @if $size != $-zf-zero-breakpoint {
            .#{$size} {
              @each $prop in (margin, padding) {
                // All Sides
                &-#{$prop}-#{$spacer} {
                  @if ($prop == margin) { 
                    margin: $spacer * $global-margin; 
                  }
                  @else if ($prop == padding) { 
                    padding: $spacer * $global-padding; 
                  }
                }

                @each $dir in (top, right, bottom, left, horizontal, vertical) {
                  // Top Side
                  &-#{$prop}-#{$dir}-#{$spacer} {
                    @if ($prop == margin) { 
                      @include margin-direction($dir, $spacer);
                    }
                    @else if ($prop == padding) { 
                      @include padding-direction($dir, $spacer);
                    }
                  }
                }
              }
            }
          }
        }
      }
    }
  }
}