foundation-sites/scss/prototype/_display.scss

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

////
/// @group prototype-display
////

/// Responsive breakpoints for display classes
/// @type Boolean
$prototype-display-breakpoints: $global-prototype-breakpoints !default;

/// Map containing all the `display` classes
/// @type Map
$prototype-display: (
  inline,
  inline-block,
  block,
  table,
  table-cell
) !default;

/// Display classes, by default coming through a map `$prototype-display`
/// @param {String} $display [] Display classes
@mixin display($display) {
  display: $display !important;
}

@mixin foundation-prototype-display {
  @each $display in $prototype-display {
    .display-#{$display} {
      @include display($display);
    }
  }

  @if ($prototype-display-breakpoints) {
    // Loop through Responsive Breakpoints
    @each $size in $breakpoint-classes {
      @include breakpoint($size) {
        @each $display in $prototype-display {
          @if $size != $-zf-zero-breakpoint {
            .#{$size}-display-#{$display} {
              @include display($display);
            }
          }
        }
      }
    }
  }
}