.content{    width:100%;    background-color: #f4f4f4;}.content .top{    width:100%;    position: relative;    margin: 0 auto;    overflow: hidden;}.content .top .top_rp{    width:100%;    height:300px;    margin-bottom: 40px;}.content .top .top_img{    position: absolute;    bottom: 15px;    left: 48.7%;}.cpfw{    background-color: #fff;}.cpfw_xx{    position: relative;    margin: 0 auto;    width:1200px;}.wbfw{    background: url("../images/service/service_bg.png") no-repeat;    width:100%;    height:540px;}.wbfw .wbfw_xx{    position: relative;    margin: 0 auto;    width:1200px;}.wbfw_text{    position: absolute;    bottom: 70px;    left: 210px;    width:800px;    color: #fff;    line-height: 40px;    text-align: justify;}.zjfw{    width:100%;    background-color: #fff;}.zjfw .zjfw_xx{    position: relative;    margin: 0 auto;    width:1200px;}.zjfw_text{    position: absolute;    bottom: 70px;    left: 210px;    width:800px;    color: #fff;    line-height: 40px;    text-align: justify;}.gjfw{    background: url("../images/service/service_bg.png") no-repeat;    width:100%;    height:540px;}.gjfw .gjfw_xx{    position: relative;    margin: 0 auto;    width:1200px;}.gjfw_text{    position: absolute;    bottom: 70px;    left: 210px;    width:800px;    color: #fff;    line-height: 40px;    text-align: justify;}/*==================================*/.nav_right{    position: fixed;    width:180px;    right: 20px;    bottom: 50%;}.nav_right ul li:first-child div{    background-color: #e7444a;    color: #fff;}.nav_right ul li div{    height:40px;    line-height: 40px;    text-align: center;    color: #636363;    cursor: pointer;    background-color: #262626;}.nav_right ul li div:hover{    background-color: #e7444a;    color: #fff;}a{    color: #272636;}.back_top{    clear: both;    width:84px;    height:50px;    float: right;    margin-right: -100px;    margin-top: -110px;    background-color: #fff;    cursor: pointer;    text-align: center;    line-height: 50px;}.back_top i{    font-size: 30px;}/*================================*/.footer{    clear: both;}div{    /*border: 1px solid red;*/}