.dl {
    width: 100%;
    height: 100vh;
    margin: auto;
    background-image: url("../images/iot_bg.jpg");
    background-size: 100% 100%;
    overflow: hidden;
    /*display: flex;*/
    align-items: center;
    justify-content: right;
    position:relative;
}

.dl .ec {
    position: absolute;
    top: 20%;
    right: 12%;
    /*
margin-bottom:5%;
margin-right:15%;
    */
}

.dl .bt {
  font-size: .45rem;
  font-family: SourceHanSansCN;
  font-weight: bold;
  color: #fff;
  text-align: center;
}

.dl .nr {
    width: 5.5rem;
    height: 5rem;
    background: #ffffff;
    background-size: 100% 100%;
    margin: 0 auto;
    margin-top: .2rem;
    overflow: hidden;
    position: relative;
}

.dl .nr > .zuo {
  width: .19rem;
  height: .19rem;
  position: absolute;
  left: 0;
  top: 0;
}

.dl .nr > .you {
  width: .19rem;
  height: .19rem;
  position: absolute;
  right: 0;
  bottom: 0;
}

.dl .nr ul li{
    position:relative;
}

.dl .nr ul li i {
    font-size: .28rem;
    position: absolute;
    left: 1.1rem;
    top: .1rem;
    color: #dee3e8;
}

.dl .nr ul li h6 {
    font-size: .26rem;
    font-family: SourceHanSansCN;
    font-weight: bold;
    color: #000;
    margin-top: .45rem;
    text-align: center;
}

.dl .nr ul li p {
  font-size: .18rem;
  font-family: SourceHanSansCN;
  font-weight: 400;
  color: #79acd8;
  margin-top: .17rem;
  text-align: center;
  margin-bottom: .2rem;
}

.dl .nr ul li input {
    width: 3.5rem;
    height: .45rem;
    margin: 0 auto;
    background: #fff;
    border-radius: .03rem;
    margin-bottom: .18rem;
    display: block;
    padding-left: .4rem;
    font-size: .18rem;
    color: #1e1e1e;
    border: 1px solid #dee3e8
}

.dl .nr ul li input::placeholder {
    font-size: .18rem;
    font-family: Helvetica Neue,Helvetica,PingFang SC,Hiragino Sans GB,Microsoft YaHei,"\5FAE\8F6F\96C5\9ED1",Arial,sans-serif;
    font-weight: 400;
    color: #b5b5b5;
}

.dl .nr ul li a {
    width: 3.5rem;
    height: .45rem;
    background: #1890ff;
    border-color: #1890ff;
    border-radius: .03rem;
    display: block;
    margin: 0 auto;
    margin-top: .3rem;
    font-size: .20rem;
    font-family: SourceHanSansCN;
    font-weight: 600;
    color: #fff;
    line-height: .45rem;
    text-align: center;
}

.dl .nr ul .yzm {
  display: flex;
  width: 3.5rem;
  justify-content: space-between;
  margin: 0 auto;
}

.dl .nr ul .yzm input {
  width: 2rem;
  height: .45rem;
  margin: 0;
}

.dl .nr ul .yzm img {
  width: 1.2rem;
  height: .57rem;
}