.footer {
  display: flex;
  justify-content: space-between;
  width: 100%;
  max-width: 640px;
  position: fixed;
  left: 0;
  bottom: 0;
  background: #fff;
  z-index:99;
}
.footer_li{
  padding: 10px 0;
  width: 20%;
  text-align: center;
  font-size: 13px;
}
.footer>li>a{
  font-size: 1.3rem;
  color: #999;
  display: block;
  width: 100%;
}
.footer_li .clicked{
  color: #ac834d;
}
.footer>li>a>img{
  margin: 0 auto;
  width: 30%;
}
.footer_li_diff .img{
  display: none;
}
.footer_li_diff .img_h{
  display: block;
}
.footer_li_diff{
  background: #fff;
}
.footer_li_diff .footer_s{
  display: none;
}
.footer_li_diff .footer_c{
  display: block;
}
.footer_c{
  display: none;
}


@media (min-width: 480px) and (max-width: 1920px){
  .footer{
    left: auto;
  }
}