.content {
  padding-bottom: 100px;
  min-height: 100vh;
  background: url(../img/download/bg.png) no-repeat;
  background-size: 100% 100%;
  background-position: center;
}
.content-tit {
  padding-top: 176px;
  padding-bottom: 12px;
  text-align: center;
  font-weight: 400;
  font-size: 72px;
}
.content-dec {
  margin-bottom: 104px;
  text-align: center;
  font-size: 14px;
}
.qr-box {
  display: flex;
  justify-content: space-between;
}
.qr-box>.item {
  padding: 30px 40px 0 40px;
  width: 240px;
  height: 240px;
  font-weight: 400;
  font-size: 14px;
  text-align: center;
  background: rgba(255, 255, 255, 0.96);
  box-shadow: 0px 0px 24px 0px rgba(19,17,18,0.08);
  border-radius: 12px;
}
.qr-box>.item>img {
  margin-bottom: 10px;
  width: 160px;
  height: 160px;
}
.img-icon {
  margin-right: 4px;
  width: 16px;
  height: 16px;
}
@media (max-width:800px) and (min-width:600px){
  .content-tit {
    font-size: 50px;
  }
  .qr-box>.item {
    width: 180px;
    height: 180px;
  }
  .qr-box>.item>img {
    width: 100px;
    height: 100px;
  }
}
@media (max-width:600px){
  .content {
    padding-bottom: 30px;
  }
  .content-tit {
    padding-top: 126px;
    font-size: 24px;
  }
  .content-dec {
    margin-bottom: 50px;
  }
  .qr-box {
    display: block;
    text-align: center;
  }
  .qr-box>.item {
    margin: auto auto 20px auto;
    width: 300px;
    height: 300px;
  }
  .qr-box>.item>img {
    margin-bottom: 10px;
    width: 210px;
    height: 210px;
  }
}