.gas_sensor_container{width:1200px;margin:0 auto}.gas_sensor_sec1{height:986px;background:url(../images/gas_sensor/gas_bg_01-434c2e6544.jpg) center center no-repeat;text-align:center}.gas_sensor_sec1 h1{font-size:42px;color:#333;text-align:center;margin-bottom:63px;padding-top:172px}.gas_sensor_sec2{height:935px;background:url(../images/gas_sensor/gas_bg_02-7f1b5b7d6f.jpg) center center no-repeat;text-align:center}.gas_sensor_sec2 h1{padding-top:360px;font-size:36px;line-height:30px;color:#fff}.gas_sensor_sec2 p{margin-top:48px;font-size:24px;line-height:36px;color:#fff}.gas_sensor_sec3 h1,.gas_sensor_sec4 h1{font-size:36px;line-height:45px;font-weight:400}.gas_sensor_sec3{height:960px;background:url(../images/gas_sensor/gas_bg_03-16f2d95966.jpg) center center no-repeat;text-align:center}.gas_sensor_sec3 h1{padding-top:626px;color:#333}.gas_sensor_sec4{height:951px;background:url(../images/gas_sensor/gas_bg_04-3912665008.jpg) center center no-repeat;text-align:center}.gas_sensor_sec4 h1{padding-top:70px;color:#333}.gas_sensor_sec4 p{font-size:16px;line-height:24px;color:#333;margin-top:10px}.gas_sensor_sec5{height:959px;background:url(../images/gas_sensor/gas_bg_05-a4cb64c912.jpg) center center no-repeat;text-align:center}.gas_sensor_sec5 h1{font-size:36px;font-weight:400;line-height:45px;color:#333;padding-top:90px}.gas_sensor_sec5 p{margin-top:40px;font-size:16px;line-height:24px;color:#333}.gas_sensor_sec6{height:959px;background:url(../images/gas_sensor/gas_bg_06-59632193ff.jpg) center center no-repeat}.gas_sensor_sec6 .gas_sensor_container .txtbox{padding-top:346px;padding-left:660px;color:#333}.gas_sensor_sec6 .gas_sensor_container .txtbox h1{font-size:36px;line-height:45px;font-weight:400}.gas_sensor_sec6 .gas_sensor_container .txtbox p{margin-top:50px;font-size:18px;line-height:32px}.gas_sensor_sec7{background-color:#f7f7f7}.gas_sensor_sec7 h1{font-size:36px;font-weight:400;color:#333;padding-top:120px;text-align:center}.gas_sensor_sec7 ul>li{width:25%;float:left;padding:170px 0 270px}.gas_sensor_sec7 ul>li>i{width:146px;height:146px;display:block;margin:0 auto}.gas_sensor_sec7 ul>li>i.gss7_icon1{background:url(../images/gas_sensor/icon_01-c0815f1d33.png) center center no-repeat}.gas_sensor_sec7 ul>li>i.gss7_icon2{background:url(../images/gas_sensor/icon_02-be6560e6de.png) center center no-repeat}.gas_sensor_sec7 ul>li>i.gss7_icon3{background:url(../images/gas_sensor/icon_03-c9e85d7c84.png) center center no-repeat}.gas_sensor_sec7 ul>li>i.gss7_icon4{background:url(../images/gas_sensor/icon_04-8d8fb43026.png) center center no-repeat}.gas_sensor_sec8 h1,.gas_sensor_sec8 ul>li{background:url(../images/gas_sensor/sp_line-ebf3d5a353.png) bottom no-repeat}.gas_sensor_sec7 ul>li>p{font-size:18px;color:#333;margin-top:40px;text-align:center}.gas_sensor_sec8{margin-bottom:66px}.gas_sensor_sec8 h1{padding-top:80px;padding-bottom:50px;text-align:center;font-size:42px;color:#2f2f2f}.gas_sensor_sec8 ul>li{width:100%}.gas_sensor_sec8 .gas_sensors_row1 .gas_sensors_label{padding-left:90px;padding-top:50px;font-size:18px;color:#2f2f2f;float:left}.gas_sensor_sec8 .gas_sensors_picbox{float:left;padding-left:326px}.gas_sensor_sec8 .gas_sensors_picbox .gas_sensorsp_pic{display:block;width:124px;height:143px;padding-top:32px;background:url(../images/gas_sensor/gas_sensor_icon-5a57408469.png) right no-repeat}.gas_sensor_sec8 .gas_sensors_picbox .gas_sensorsp_title{text-align:center;padding-bottom:34px;padding-top:40px;font-size:16px;color:#666}.gas_sensor_sec8 .gas_sensors_lf,.gas_sensor_sec8 .gas_sensors_rt{float:left;width:506px;height:40px;padding-left:94px;padding-top:13px;padding-bottom:7px}.gas_sensor_sec8 .gas_sensors_rt{padding-left:164px;width:436px}.gas_sensor_sec8 .gas_sensors_lf .gas_sensors_label,.gas_sensor_sec8 .gas_sensors_rt .gas_sensors_label{font-size:18px;color:#2f2f2f}