.banner_main{
    height: 600px;
    background: url("../images/banner.jpg");
    background-size: 100% 100%;
    position: relative;
}
.banner_div{
    width: 100%;
    height: 100%;
    position: absolute;
    top: 0;
    left: 0;
    z-index: 11;
    background-color: rgba(0, 0, 0, 0.19);
}
.banner_txt_div{
    width: 100%;
    height: 100%;
    position: absolute;
    top: 0;
    left: 0;
    z-index: 15;
}
.banner_txt{
    width: 700px;
    height: 360px;
    margin: 120px 0 120px 0;
    color: #ffffff;
    position: relative;
}
.banner_txt p{
    text-align: justify;
    padding-right: 220px;
}

/* 二级类目 */
.class_main{
    width: 60px;
    min-height: 100px;
    background-color: rgba(0, 0, 0, 0.72);
    position: absolute;
    z-index: 999;
    top: 30%;
    left: 0;
}
.class_main .frame_main{
    width: 60px;
}
.class_main ul{
    list-style-type: none;
    margin: 0;
    padding: 0;
}
.class_main li{
    width: 60px;
    line-height: 18px;
    text-align: left;
    letter-spacing: 2px;
}
.class_main li button{
    display: block;
    padding: 10px;
    width: 100%;
    height: 100%;
    font-size: 14px;
    color: #333333;
}
.class_main .checked button{
    background-color: rgba(2, 103, 218, 0.82);
    color: #ffffff;
    border: 0;
}

/* 产品信息 */
.product_info_main{
    min-height: 500px;
    padding-bottom: 50px;
    display: none;
}
.product_info_main:first-child{
    display: block;
}
.product_content{
    padding: 0;
    margin: 0;
    display: none;
}
.product_img_main,
.product_desc_main{
    height: 100%;
}
.product_left_name{
    padding: 2rem 0;
    font-size: 2.5rem;
    font-weight: 100;
    border-bottom: 1px solid #dddddd;
    color: #999999;
    cursor: pointer;
}
.product_left_name:hover{
    font-size: 2.6rem;
    font-weight: 200;
    color: #0567d8;
    border-bottom: 1px solid #0567d8;
}
.selected{
    font-size: 2.6rem;
    font-weight: 200;
    color: #0567d8;
    border-bottom: 1px solid #0567d8;
}
.product_img_main{
    text-align: left;
    height: 500px;
}
.product_img{
    width: 100%;
    padding: 0 20px;
    height: 380px;
    margin-top: 170px;
    position: absolute;
    bottom: 0;
}
.product_desc_main{
    padding-right: 0;
    height: 500px;
}
.product_desc{
    margin-top: 70px;
}
.product_desc_title{
    width: 100%;
    height: 80px;
    line-height: 40px;
    font-size: 28px;
    padding-bottom: 40px;
}
.product_desc_txt{
    text-align: justify;
    min-height: 300px;
    line-height: 20px;
}

.product_desc_txt p{
    margin: 0;
    padding: 0;
    max-width: 100%;
    word-wrap:break-word;
}
.product_desc_txt img{max-width: 100%;}
.product_desc_txt div{max-width: 100%;}
.product_desc_txt span{max-width: 100%;}
.product_desc_txt table td{border: 1px solid #ffffff}

.product_desc_btn a{
    color: #333333;
}

/* 我们的优势 */
.advantage_main{
    height: 500px;
    background-color: #0267DA;
}
.advantage_title{
    padding-top: 100px;
    height: 170px;
    color: #ffffff;
}
.advantage_title h4{
    margin: 0;
    font-size: 32px;
    line-height: 40px;
}
.advantage_title p{
    margin: 0;
    font-size: 20px;
    line-height: 32px;
}
.advantage_content ul{
    margin: 0;
    padding: 30px 0 0 0;
    list-style-type: none;
}
.advantage_content li{
    float: left;
    margin: 0 0 0 94px;
    width: 220px;
    color: #ffffff;
}
.advantage_content li:first-child{
    margin: 0;
}
.advantage_content li p{
    font-size: 14px;
    text-align: justify;
}

/* 全产品介绍 */
.all_desc_main{
    height: 550px;
    background-color: rgba(0, 0, 0, 0.56);
}
.desc_content{
    font-size: 16px;
    text-align: justify;
    color: #ffffff;
}
.desc_btn{
    padding-top: 30px;
}
.desc_btn a{
    color: #ffffff;
}