.alert-variant(@background; @icon-color) {
  .@{alert-ns}-container & {
    // Content
    .@{alert-ns}-item-content {
      background-color: @background;
      color: @text-color;

      // Tip icon
      .@{ns}icon {
        color: @icon-color;
      }
    }

    // Close button
    .@{alert-ns}-item-close {
      color: @icon-color;
    }
  }
}