sp-codes.de/bower_components/foundation-sites/scss/components/_reveal.scss

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

////
/// @group reveal
////

/// Default background color of a modal.
/// @type Color
$reveal-background: $white !default;

/// Default width of a modal, with no class applied.
/// @type Number
$reveal-width: 600px !default;

/// Default maximum width of a modal.
/// @type Number
$reveal-max-width: $global-width !default;

/// Default padding inside a modal.
/// @type Number
$reveal-padding: $global-padding !default;

/// Default border around a modal.
/// @type Number
$reveal-border: 1px solid $medium-gray !default;

/// Default radius for modal.
/// @type Number
$reveal-radius: $global-radius !default;

/// z-index for modals. The overlay uses this value, while the modal itself uses this value plus one.
/// @type Number
$reveal-zindex: 1005 !default;

/// Background color of modal overlays.
/// @type Color
$reveal-overlay-background: rgba($black, 0.45) !default;

/// Adds styles for a modal overlay.
/// @param {Color} $background [$reveal-overlay-background] - Background color of the overlay.
@mixin reveal-overlay {
  display: none;
  position: fixed;
  top: 0;
  bottom: 0;
  left: 0;
  right: 0;
  z-index: $reveal-zindex;
  background-color: $reveal-overlay-background;
  overflow-y: scroll;
}

/// Adds base styles for a modal.
@mixin reveal-modal-base {
  @include disable-mouse-outline;
  display: none;
  z-index: $reveal-zindex + 1;
  padding: $reveal-padding;
  border: $reveal-border;
  background-color: $reveal-background;
  border-radius: $reveal-radius;

  @include breakpoint(medium) {
    min-height: 0;
  }

  // Make sure rows don't have a min-width on them
  .column,
  .columns {
    min-width: 0;
  }

  // Strip margins from the last item in the modal
  > :last-child {
    margin-bottom: 0;
  }
}

/// Adjusts the width of a modal.
/// @param {Number} $width - Width of the modal. Generally a percentage.
/// @param {Number} $max-width [$reveal-max-width] - Maximum width of the modal.
@mixin reveal-modal-width(
  $width: $reveal-width,
  $max-width: $reveal-max-width
) {
  @include breakpoint(medium) {
    @extend %reveal-centered;
    width: $width;
    max-width: $reveal-max-width;
  }
}

/// Creates a full-screen modal, which stretches the full width and height of the window.
@mixin reveal-modal-fullscreen {
  // scss-lint:disable DuplicateProperty
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  height: 100vh;
  min-height: 100vh;
  max-width: none;
  margin-left: 0;
  border: 0;
  border-radius: 0;
}

@mixin foundation-reveal {
  // [TODO] Is this necessary?
  // scss-lint:disable QualifyingElement
  body.is-reveal-open {
    overflow: hidden;
  }
  // html gets this class only in iOS
  html.is-reveal-open,
  html.is-reveal-open body {
    height: 100%;
    overflow: hidden;
    user-select: none;
  }

  // Overlay
  .reveal-overlay {
    @include reveal-overlay;
  }

  // Modal container
  .reveal {
    @include reveal-modal-base;
    @include reveal-modal-width($reveal-width);
    position: relative;
    top: 100px;
    margin-left: auto;
    margin-right: auto;
    overflow-y: auto;

    // Placeholder selector for medium-and-up modals
    // Prevents duplicate CSS when defining multiple Reveal sizes
    @include breakpoint(medium) {
      %reveal-centered {
        left: auto;
        right: auto;
        margin: 0 auto;
      }
    }

    // Remove padding
    &.collapse {
      padding: 0;
    }

    // Sizing classes
    &.tiny  { @include reveal-modal-width(30%); }
    &.small { @include reveal-modal-width(50%); }
    &.large { @include reveal-modal-width(90%); }

    // Full-screen mode
    &.full {
      @include reveal-modal-fullscreen;
    }

    @include breakpoint($-zf-zero-breakpoint only) {
      @include reveal-modal-fullscreen;
    }

    &.without-overlay {
      position: fixed;
    }
  }
}