锘?{
  font-family: "Microsoft YaHei";
}
.contact{
  width: 35rem;
  height: 100%;
  float: right;
}
.contact_us{
  /* font-size: 100px; */
  font-size: 6.2rem;
  color: #fff;
  vertical-align: text-bottom;
  display: block;
  width: 100%;
  height: 60%;
  text-align: right;
  /* float: right; */
  padding-right: 3rem;
  line-height: 8rem;
  margin-top: 2rem;
}
.contact_us_meth{
  display: block;
  width: 100%;
  height: 30%;
  text-align: right;
  padding-right: 3rem;
  /* float: right; */
  margin-top: 5rem;
}
.back_to_top{
  display: block;
  width: 4rem;
  margin-left: 3rem;
}