zh_wx/pages/beforeLogin/beforeLogin.wxss

.getPhone{
   position: absolute;
   left: 50%;
   top: 80%;
   transform: translate(-50%,-50%);  
   width:100%;
   z-index: 2;
}
.bck{
  background-color: black;
  height: 100vh;
}
.logo{
  background-image:url('https://zh.qingyaokeji.com/logo.png');
  width: 220rpx;
  height: 220rpx;
  background-repeat: no-repeat;
  position: absolute;
  top: 12%;
  left: 50%;
  transform: translate(-50%,0);
  background-size: cover;
  z-index: 2;
}
.enter{
  background-image:url('https://zh.qingyaokeji.com/login.png');
  width: 100%;
  height: 100vh;
  position: fixed;
  top: -10%;
  left: 0;
  background-repeat: no-repeat;
  background-size: cover;
  z-index: 1;
}