AdminLte/build/scss/_modals.scss

//
// Component: Modals
//

// Overlay
.modal-dialog {
  .overlay {
    background-color: $black;
    display: block;
    height: 100%;
    left: 0;
    opacity: .7;
    position: absolute;
    top: 0;
    width: 100%;
    z-index: ($zindex-modal + 2);
  }
}


// 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;
    }
  }
}