body,html{
  width: 100%;
  height: 100%;
  background-color: #000;
  margin: 0;
  padding: 0;
}
img{
  display: block;
}
.main {
  overflow: hidden;
  position: relative;
  flex: 1 1;
}
.logo{
  position: absolute;
  left: 30px;
  top: 30px;
  width: 130px;
  height: 55px;
}
.wrapper {
  display: none;
  position: absolute;
  top: 50%;
  right: 0;
  left: 0;
  margin-top: 10px;
  margin-right: auto;
  margin-left: auto;
  height: 604px;
  -webkit-transform: translateY(-50%);
  transform: translateY(-50%);
}
.wrapper .phone{
  width: 299px;
  height: 604px;
  position: absolute;
  left: 50%;
  margin-left: -340px;
  top: 0;
}
.wrapper .title{
  width: 471px;
  height: 126px;
  position: absolute;
  left: 50%;
  margin-left: 0px;
  top: 150px;
}
.wrapper .btn{
  position: absolute;
  left: 50%;
  margin-left: 310px;
  top: 280px;
  width: 122px;
  height: 40px;
  cursor: pointer;
}
.footer{
  width: 100%;
  /*position: absolute;*/
  bottom: 0;
  text-align: center;
  color: #ffffff;
  font-size: 12px;
  padding: 0 10px 10px;
  box-sizing: border-box;
}
.mobile{
  padding-top:30px;
  box-sizing: border-box;
  width: 100%;
  height: 100%;
  display: none;
}
.mobile .phone{
  width: 200px;
  height: 402px;
  margin: 30px auto 50px;
}
.mobile .title{
  width: 300px;
  height: 70px;
  margin: 40px auto 0;
}
.mobile .btn{
  width: 81px;
  height: 24px;
  cursor: pointer;
  margin: 30px auto 0;
}