AdminLte/build/scss/_modals.scss

//
// Component: Modals
//

// Overlay
.modal-dialog {
  .overlay {
    display: flex;
    position: absolute;
    left: 0;
    top: 0;
    bottom: 0;
    right: 0;
    margin: -$modal-content-border-width;
    z-index: ($zindex-modal + 2);
    justify-content: center;
    align-items: center;
    background-color: rgba($black, .7);
    color: darken($gray-600, 2.5%);
    @include border-radius($modal-content-border-radius);
  }
}


// BG Color Variations Fixes
.modal-content {
  &.bg-warning {
    .modal-header,
    .modal-footer {
      border-color: $gray-800;
    }
  }

  &.bg-primary,
  &.bg-secondary,
  &.bg-info,
  &.bg-danger,
  &.bg-success, {
    .close {
      color: $white;
      text-shadow: 0 1px 0 $black;
    }
  }
}

@include dark-mode () {
  .modal-header,
  .modal-footer {
    border-color: $gray-600;
  }
  .modal-content {
    background-color: $dark;

    &.bg-warning {
      .modal-header,
      .modal-footer {
        border-color: $gray-600;
      }
      .close {
        color: $dark !important;
        text-shadow: 0 1px 0 $gray-700 !important;
      }
    }

    &.bg-primary,
    &.bg-secondary,
    &.bg-info,
    &.bg-danger,
    &.bg-success {
      .modal-header,
      .modal-footer {
        border-color: $white;
      }
    }
  }
}