.content{
    padding-top: 220px;
    width: 100%;
    height: -webkit-fill-available;

}
.main{
    margin: 0 auto;
    width: 1100px;
}

.left-box{
    background: #f3f3f3;
    width:240px;
    float: left;
}
.right-box{
    width: 820px;
    float: right;
}
.left-box-ul{
    width: 100%;
}
.left-box-ul li{
    padding: 10px 25px ;
    list-style: none;
    border-bottom: 1px #ddd solid;
}
.left-box-ul .li-tab{
    background:rgba(51,51,51,1);
    font-weight: bold;
    color: #fff0f0;
   padding-left: 10px;
}
.left-box-ul .active{font-weight: bold}

.about-cont{
    width: 820px;
    float: right;
    padding: 10px;
    line-height: 30px;
}
.title_main{font-size: 20px;font-weight: bold}