.about{
    overflow: hidden;
    padding:15px -5px 20px 0px;
    margin-left:-8px;
}
.nav_left{
    padding-top:5px;
    width:280px;
    float: left;
    padding-right:20px;
    padding-left:8px;
}
.about_main{
    margin-top:5px;
    width:1055px;
    float: left;
}
.about_content{
    padding:20px;
    border-radius: 10px;
    background:#fff;
}
.nav_left ul li{
    height:78px;
    line-height:78px;
    overflow: hidden;
    margin-bottom:20px;
    background:#ff0000;
    border-radius: 10px;
    box-shadow: 0px 0px 8px #ff0000;
}
.nav_left ul li a{
    display: block;
    height:78px;
    line-height:78px;
    color:#fff;
    font-weight: 600;
    position:relative;
    padding-left:30px;
}
.nav_left ul li a i{
    width:25px;
    height:78px;
    position: absolute;
    left:72px;
    top:0px;
    display: block;
}
.nav_left ul li a .icon_about_01{
    left:70px;
    background:url(./../image/icon_about_01.png) no-repeat center;
}
.nav_left ul li a .icon_about_02{
    background:url(./../image/icon_about_02.png) no-repeat center;
}
.nav_left ul li a .icon_about_03{
    background:url(./../image/icon_about_03.png) no-repeat center;
}
.nav_left ul li a .icon_about_04{
    background:url(./../image/icon_about_04.png) no-repeat center;
}
.nav_left ul li a .icon_about_05{
    background:url(./../image/icon_about_05.png) no-repeat center;
}
.nav_left ul li p{
    line-height:76px;
    color:#fff;
    font-weight: 600;
    font-size:17px;
    text-align: center;
}
.about_list{
    overflow: hidden;
    margin-bottom:30px;
}
.about_item_left{
    float: left;
    width:303px;
    padding-right:20px;
}
.about_item_img{
    width:303px;
    height:308px;
    border-radius: 10px 0px 0px 10px;
}
.about_item_right{
    float: left;
    width:692px;
}
.about_item_intor ul{
    overflow: hidden;
    margin-top:12px;
}
.about_item_intor ul li{
    float: left;
    width:33%;
    padding-bottom: 20px;
}
.about_item_intor ul .clear{
    width:100%;
    padding-bottom: 0px;
}
.about_item_intor .about_item_jg li{
   padding-bottom:5px;
}
.about_item_intor .about_item_jg li a{
    line-height:18px;
}
.about_item_intor .about_item_qy{
    margin-top:40px;
}
.about_item_intor .about_item_qy li{
    width:100%;
}
.about_item_intor .about_item_qy li a{
    line-height:40px;
}
.about_item_intor ul li a{
    line-height:20px;
    overflow: hidden;
}
.about_item_nav{
    overflow: hidden;
    background:#ff0000;
    padding:0px 20px;
}
.about_item_nav li{
    width:100px;
    text-align: left;
    float: left;
    position: relative;
    text-align: center;
    height:60px;
}
.about_item_nav li a{
    display: inline-block;
    height:58px;
    line-height:58px;
    font-size:17px;
    font-weight: 600;
    color:rgba(255,255,255,.9)
}
.about_item_nav li a:hover,.about_item_nav .current a{
    color:#fff;
}
.about_item_nav li:after{
    content:'';
    display: block;
    position: absolute;
    width:1px;
    height:20px;
    background:#fff;
    right:0px;
    top:50%;
    margin-top:-10px;
}
.about_item_nav .about_item_nav_end:after{
    display: none;
}
.about_item_text{
    margin-top:7px;
    height:210px;
    line-height:30px;
    overflow: hidden;
}
.about_book{
    overflow: hidden;
    padding-top:10px;
}
.about_book_left,.about_book_right{
    float: left;
}
.about_book_left{
    width:324px;
}
.about_book_right{
    width:368px;
}
.book_list{
    overflow: hidden;
    height:158px;
}
.book_title{
    overflow: hidden;
    padding:21px 0px;
}
.book_title i{
    display: block;
    float: left;
    width:21px;
    height:21px;
}
.book_title h4{
    width:120px;
    float: left;
    height:21px;
    line-height:21px;
    padding-left:10px;
    font-size:15px;
    font-weight: 600;
}
.about_icon_01{
    background:url(./../image/about_icon_01.png) no-repeat center;
}
.about_icon_02{
    background:url(./../image/about_icon_01.png) no-repeat center;
}
.book_img_list{
    overflow: hidden;
}
.book_img_list li{
    padding-right:10px;
    float: left;
}
.book_img_list li, .book_img_list img{
    width:147px;
}
.book_img_list img{
    display: block;
}
.book_list{
    height:158px;
}
.book_title{
    padding:16px 0px;
}
.book_list li a{
    line-height:35px;
    white-space: nowrap;
    text-overflow: ellipsis;
    overflow: hidden;
    display: block;
}
/* @media (max-width: 1440px){ */
    .about_main{
        width:900px;
    }
    .about_item_right{
        width:537px;
    }
    .about_book_right{
        width:213px;
    }
/* } */
@media (max-width: 1279px){
    .about_main{
        width:660px;
    }
    .about_item_text{
        height:120px;
        line-height:24px;
        margin-top:10px;
    }
    .about_item_text p{
        line-height: 24px;
    }
    .about_item_left, .about_item_img{
        width:215px;
        height:219px;
    }
    .about_item_right{
        width:385px;
    }
    .about_item_intor ul{
        margin-top:8px;
    }
    .about_item_intor ul li a{
        font-size:13px;
        line-height: 30px;
    }
    .about_item_intor .about_item_jg li{
        padding-bottom:0px;
    }
    .about_item_intor .about_item_jg li a{
        line-height:16px;
    }
    .about_item_intor .about_item_qy{
        margin-top:20px;
    }
    .about_item_intor .about_item_qy li a{
        line-height: 30px;
    }
    .about_book_left{
        width:188px
    }
    .book_img_list li, .book_img_list img{
        width:84px
    }
    .about_book_right{
        width:197px;
    }
    .book_title{
        padding:10px 0px;
    }
    .book_list{
        height:88px;
    }
    .book_list li a{
        font-size:13px;
        line-height: 22px;
    }
}