.wrap{
    background-image: url("../imgs/bg.png") ;
    background-repeat: no-repeat;
}
.nav{
    position: relative;
    margin: 0 auto;
    left: 0px;
    transform: translate(0,0);
}
.content{
    width: 1200px;
    margin: 0 auto;
}
.tab{
    width: 581px;
    height: 70px;
    border-radius: 5px;
    border: 1px solid #13e2f4;
    color: #ffffff;
    margin-top: 41px;
}
.tab span{
    display: inline-block;
    margin: 25px 25px;
    font-size: 22px;
    cursor: pointer;
}
.tab .spaned{
    border-bottom: 2px solid #13e2f4;
    color: #13e2f4;
}
.tab-left{
    width: 786px;
    margin-right: 59px;
}
.tab-right{
    width: 250px;
}
.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);
}
.tab-content{
    border-bottom: 1px solid #13e2f4;
    padding-bottom: 30px;
}
.tab-con-title{
    font-size: 24px;
    color: #13e2f4;
    margin-top: 46px;
}
.tab-little-p1{
    color: #13e2f4;
    font-size: 20px;
    margin-bottom: 16px;
}
.tab-little-p2{
    font-size: 16px;
    line-height: 24px;
}
.tab-little-p3{
    color: #787C7C;
    font-size: 18px;
    margin-top: 25px;
}
.text-center{
    text-align: center;
}
.tab-content{
    cursor: pointer;
    padding-top: 40px;
}