.wrap{
    background-image: url("../imgs/bg-conU.png") ;
    background-repeat: no-repeat;
    background-size: cover;
}
.nav{
    position: relative;
    margin: 0 auto;
    left: 0px;
    transform: translate(0,0);
}
.sp-biaoti{
    display: inline-block;
    background-color: #15244B;
    color: #13E2F4;
    width: 150px;
    height: 55px;
    line-height: 55px;
    border-radius: 10px;
    text-align: center;
    font-size: 18px;
    cursor: pointer;
}
.sp-biaotied{
    background-color: #13E2F4;
    color: #ffffff;
}
.biaoti{
    font-size: 0px;
}
.content{
    width: 1200px;
    margin: 53px auto;
}
.tab-con{
    border-radius: 5px;
    border: 1px solid #13e2f4;
    margin-top: 70px;
    padding:0  50px 35px 50px;
    color: #ffffff;
    margin-bottom: 40px;
    background-color: rgba(0,0,0,.4);
}
.bigS{
    font-size: 24px;
    color: #13e2f4;
    line-height: 107px;
    border-bottom: 1px solid #13e2f4;
}