/* 定义喇叭图标样式 */
    #lb-icon {
      position: fixed;
      top: 2%;
      left: 2%;
      width: 50px;
      height: 50px;
      background-image: url('../image/lb.png');
      background-size: cover;
      animation: shake 0.5s infinite;
      z-index: 9999;
      cursor: pointer;
    }

    /* 定义抖动动画 */
    @keyframes shake {
      0% {
        transform: rotate(-10deg);
      }
      50% {
        transform: rotate(10deg);
      }
      100% {
        transform: rotate(-10deg);
      }
    }