.banner{
    width: 100%;
    margin-top: 120px;
    position: relative;
}
.banner>.bg{
    width: 100%;
}




section>.content{
    width: 1200px;
    margin: 0 auto 50px;
    padding: 20px 0 80px 0 ;
    box-sizing: border-box;
}

section>.content_list{
}

section>.content_tab{
    font-size: 14px;
    color: #333;
}







.l{
    float: left;
}

.r{
    float: right;
}