.pc{ width: 100%; height: 100%; position: absolute; top:0; left: 0;display: none; background: #fff;z-index: 999; text-align: center }
.pc .qrcode{ margin: 12% auto auto auto }
.wxopen{display: none}
.icon{width: 40%;position: absolute; bottom: 300px; left: 30%; border-radius:30px;}
.btn{ width: 60%; height: 34px; border:1px solid #2466f4; position: absolute; bottom: 200px; left: 20%; border-radius: 15px; line-height: 34px; text-align: center; color: #2466f4; text-decoration: none; }
@media screen and (min-width:800px){
  .pc{display: block}
  .mo{ display: none }
}