/* 灯箱样式 */
    .lightbox {
      display: none;
      position: fixed;
      top: 0;
      left: 0;
      width: 100%;
      height: 100%;
      background: rgba(0, 0, 0, 0.8);
      z-index: 9999;
    }
    .lightbox img {
      max-width: 80%;
      max-height: 80%;
      position: absolute;
      top: 50%;
      left: 50%;
      transform: translate(-50%, -50%);
    }
    
  /* 左右箭头样式 */
  .lightbox .prev,
    .lightbox .next {
      position: absolute;
      top: 50%;
      transform: translateY(-50%);
      width: 50px;
      height: 50px;
      background-color: rgba(255, 255, 255, 0.5);
      color: #000;
      font-size: 30px;
      line-height: 50px;
      text-align: center;
      cursor: pointer;
    }
    .lightbox .prev {
      left: 20px;
    }
    .lightbox .next {
      right: 20px;
    }
    .lightbox .close {
      position: absolute;
      top: 20px;
      right: 20px;
      font-size: 30px;
      color: #fff;
      cursor: pointer;
    }