.banner{
    width:100%;
}
.tit_box_a{
    border-bottom:1px solid #dc0000;
    margin:0 auto 26px;
}
.title{
    margin: 35px auto 0;
}
/* 首页内容 */


.index_con{
    font-size:14px;
    display: -webkit-box;
    -webkit-box-orient: vertical;
    -webkit-line-clamp: 3;
    overflow: hidden;
}
.show_more{
    text-align: right;
}
.show_more a{
    display:inline-block;
    width:100px;
    height:36px;
    background:url("../images/show_more_btn.png") no-repeat;
    background-size:cover;
    margin-top:22px;
}
/* <!--下部分内容 产品展示列表 --> */
.product_list li{
    display:inline-block;
    width:240px;
    margin-right:21px;
    height:310px;
    vertical-align: top;
}

.product_introduction{
    display: table-cell;
    vertical-align: middle;
    text-align: center;
    width:240px;
    height: 170px;
}
.product_introduction img{
    max-height:170px;
}
.product_title{
    font-size:16px;
    color:#464646;
    line-height:22px;
    margin-top:20px;
}
.product_list li:nth-child(4n+4){
   margin-right:0;
}
@media (min-width: 740px){
    .wap_banner{
        display: none;
    }
}
@media (max-width: 740px){
    .pc_banner{
        display: none;
    }

    .index_con {
        -webkit-line-clamp: 5;
    }
    .show_more{
        text-align: left;
    }
    .show_more a{
        margin-top: 24px;
    }
    .product_list li{
        width:49%;
        margin-right:0;
       height:280px;
    }
    .product_introduction{
        height:140px;
    }
    .product_introduction img{
        width:70%;
    }
    .content_l,.title{
        width:100%;
    }
    .content_l{
        padding:0 10px;
    }
    .tit_box_a{
        margin: 0 auto 24px;
    }



}