html{
    font-size:30px;
}
.topContentBox{
    margin-top:25px;
    height:80px;
    line-height: 80px;
    position: fixed;
    z-index: 100;
}
.logoImg{
    margin-left: 60px;
    width:80px;
    height:80px;
    vertical-align: middle;
}
.qisi_logoImg{
    height:80px;
    vertical-align: middle;
}
.navBox{
    display: inline-block;
    margin-left:0.5rem;
}
.navBox a{
    color:#fff;
    padding:5px 0px;
    margin-right: 2rem;
    font-size: 0.75rem;
}
.active{
    border-bottom: 2px solid #fff;
}
.navBox a:hover{
    border-bottom: 2px solid #fff;
}
.connectUs{
    font-size: 20px;
    color: #000;
    position: absolute;
    right: 521px;
    top: 51px;
}
.middleContentBox{
    position: fixed;
    right: 0;
    top:0;
    bottom: 0;
}
.loginAndRegisterBox{
    position: absolute;
    right: 900px;
    top: 313px;
}
.loginAndRegisterBox p{
    margin-bottom: 10px;
}

.loginAndRegisterBox img{
    vertical-align: middle;
    margin-right: 10px;
}
.loginAndRegisterBox a{
    font-size: 36px;
    color:#000;
    vertical-align: middle;
}
.middleContentBox>img{
     position: absolute;
     right:0;
     top:0;
     height:100%;
}
@media screen and (max-width: 1600px) and (max-width: 1920px){
     html{
      font-size: 30px;
    }
  }

@media screen and (max-width: 1400px) and (max-width: 1600px) {
     html{
      font-size: 26px;
    }
  }
@media screen and (max-width: 1200px) and (max-width: 1400px) {
     html{
      font-size: 22px;
    }
  }
@media screen and (max-width: 1000px) and (max-width: 1200px) {
     html{
      font-size: 18px;
    }
  }
  .footContentBox{
    position: fixed;
    bottom: 0.75rem;
    left:2rem;
  }
  .footContentBox p,.footContentBox a{
    text-shadow: 1px 1px #fff;
    font-size: 0.6rem;
    color:#000;
  }
.productDsc {
    z-index:100;
    position: fixed;
    background-color: rgba(245,250,255,0.8);
    width: 70%;
    max-height: 60%;
    min-height: 50%;
    top: 34%;
    left: 40%;
    margin-left: -25%;
    margin-top: -8%;
    overflow: auto;
    border-radius: 10px;
}

.channel-content {
    width: 100%;
    margin-top:10px;
}

.channel-content {
    text-align: center;
}
.channel-content{
    text-align: center;
}
.channel-content>a{
   display: inline-block;
   width: 12%;
   height:200px;
   margin-right: 10px;
}
.channel-content>a:last-child{
    margin-right: 0;
}
.channel-img{
    height:150px;
    width:100%;
}
.channel-img img{
   /* height:120px;*/
    width:80%;
    margin-top:30px;
}
.channel-inf{
    text-align: center;
    color:#000;
    font-size: 18px;
    font-weight: bold;
    height:40px; 
    margin-top:10px;
}


.clearfix:after {
    content: '';
    display: table;
    clear: both;
}

.clearfix {
    zoom: 1;
}

.subjectintroduce li{
    margin-top: 1%;
    padding: 1.5em 2.5em 1.5em 2.5em;
    background-color: rgba(245,250,255,0.8);
    width: 80%;
    height: 30%;
    margin-left: 6.5%;
    overflow: auto;
    border-radius: 8px;
    -webkit-border-radius:8px;
    -o-border-radius: 8px;
    -ms-border-radius: 8px;
    text-indent: 2em;
}
.subjectintroduce li:not(:first-child){
    display: none;
}