html,
body {
  height: 100%;
}
html {
  /* font-size: 19.2px; */
   /* 初始字体大小 */
}
body {
  overflow-x: hidden;
  /* position: relative; */
  margin: 0;
  padding: 0;
}
.contactUs_box{
    width: 100%;
    height: calc(100% - 48px);
    padding-top: 2.462rem;
    background: url("https://res.damieapp.com/dm_home/mob_bg.png") no-repeat;
    background-size: 100% 100%;
    position: relative;
}
.logo_box1 {
    display: flex;
    position: relative;
    height: 1.875rem;
    width: calc(100% - 1.56rem);
    align-items: center;
    margin-bottom: 2rem;
    margin-top: 0;
    padding-left: 1.56rem;
    font-family: PingFangSC, PingFang SC;
    font-weight: 600;
    font-size: 1.04rem;
    color: #ffffff;
  }
  .logo {
    width: 1.87rem;
    height: 1.87rem;
    margin-right: 0.42rem;
  }
  .contactUs {
    position: absolute;
    right: 1.23rem;
    font-family: PingFangSC, PingFang SC;
    font-weight: 400;
    font-size: 0.77rem;
    color: #FFFFFF;
    text-decoration: none; 
  }
  .close{
    width: 1.13rem;
    height: 0.67rem;
  }
  .mobContactUs{
    height: 21.44rem;
  }
  .mobContactUs_box{
    width: 100%;
    text-align: center;
  }