.lxhyl-to-top{
    animation-duration: 1s;
    animation-iteration-count:1;
    animation-fill-mode:forwards;
  }
  .init-hide{
    opacity: 0;
  }
  .hide{
    animation-name: hide;
  }
  @keyframes hide {
    from{
      opacity: 1;
    }
    to{
      opacity: 0;
    }
  }
  .show{
    animation-name: show;
  }
  @keyframes show{
    from{
      opacity: 0;
    }
    to{
      opacity: 1;
    }
  }