.loading-animation {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.5);
    z-index: 9999;
    pointer-events: none; /* 不捕获鼠标事件 */
  }

 .loading-animation img {
    width: 50px;
  }

  .center-image {
          box-sizing: border-box;
          display: flex;
          /* 创建flex容器 */
          justify-content: center;
          /* 水平居中对齐内容 */
          align-items: center;
          /* 垂直居中对齐内容 */
          position: fixed;
          width: 100%;
          height: 100%;
      }