@charset "utf-8";.about_container{width:1200px;position:relative;margin:0 auto;}.course{background:#f2f2f2 url(../images/course/course_7.png) no-repeat center bottom/100% auto;position:relative;padding-bottom:300px;overflow:hidden;}.course .con1{height:760px;position:relative;padding-top:138px;background:-moz-linear-gradient(top,rgba(113,200,255,1) 0%,rgba(255,255,255,0) 100%);background:-webkit-linear-gradient(top,rgba(113,200,255,1) 0%,rgba(255,255,255,0) 100%);background:linear-gradient(to bottom,rgba(113,200,255,1) 0%,rgba(255,255,255,0) 100%);filter:progid:DXImageTransform.Microsoft.gradient( startColorstr='#71c8ff',endColorstr='#00ffffff',GradientType=0 );}.course_title1{text-align:center;position:relative;z-index:100;}.course_title1 h5{font-size:50px;font-weight:bold;}.course_title1 p{font-size:24px;font-family:"Baskerville Old Face";color:#0e192b;margin-top:10px;}.course_title1 h4{font-size:80px;color:#0e192b;margin-top:50px;font-weight:lighter;}.course .con1 img.img_1{position:absolute;top:0;left:9%;z-index:2;}.course .con1 img.bg1{position:absolute;top:0;left:0;max-width:37%;max-height:90%;}.course .con1 img.bg2{position:absolute;top:15%;right:0;max-width:42%;max-height:78%;}.course .con2{width:940px;margin:auto;position:relative;margin-top:100px;}.course .con2::before{content:"";width:3px;height:120%;background:#f66218;position:absolute;top:-5%;left:50%;transform:translateX(-50%);}.course .con2 img.hj{position:absolute;bottom:100%;left:50%;transform:translateX(-50%);}.course .con2 img.icon_1{position:absolute;left:100%;top:22%;}.course .con2 img.icon_2{position:absolute;right:100%;top:60%;}.course .con2 ul li .box{margin-top:-36px;width:50%;position:relative;}.course .con2 ul li .box::before{content:"";width:24px;height:24px;border:5px solid #fcd0b9;border-radius:50%;background:#f66218;position:absolute;top:43px;right:-12px;}.course .con2 ul li .text_box{background:#fff;border:1px solid #e1e0e0;padding:30px;box-shadow:3px 5px 3px rgba(0,0,0,.1);text-align:right;position:relative;transition:all .3s;}.course .con2 ul li .text_box::before{content:"";border-top:15px solid transparent;border-bottom:15px solid transparent;border-left:16px solid #fff;position:absolute;top:40px;left:100%;margin-left:-1px;z-index:2;transition:all .3s;}.course .con2 ul li .text_box::after{content:"";border-top:16px solid transparent;border-bottom:16px solid transparent;border-left:17px solid #e1e0e0;position:absolute;top:39px;left:100%;transition:all .3s;}.course .con2 ul li .text_box h5{font-size:30px;color:#f66218;font-weight:bold;transition:all .3s;}.course .con2 ul li .text_box .text{font-size:22px;color:#333;line-height:35px;margin-top:20px;transition:all .3s;}.course .con2 ul li .text_box .text p{margin:5px 0;transition:all .3s;}.course .con2 ul li:nth-child(odd) .box{padding-right:45px;}.course .con2 ul li:nth-child(even) .box{padding-left:45px;float:right;}.course .con2 ul li:nth-child(even) .box::before{right:auto;left:-12px;}.course .con2 ul li:nth-child(even) .text_box{text-align:left;}.course .con2 ul li:nth-child(even) .text_box::before{left:auto;right:100%;margin:0 -1px 0 0;transform:rotateY(180deg);}.course .con2 ul li:nth-child(even) .text_box::after{left:auto;right:100%;transform:rotateY(180deg);}.course .con2 ul li .text_box:hover{background-color:#f66218;}.course .con2 ul li .text_box:hover::before{border-left-color:#f66218;}.course .con2 ul li .text_box:hover h5{color:#fff;}.course .con2 ul li .text_box:hover p{color:#fff;}.course .con2 ul li:nth-child(1) .text_box .text{color:#f66218;}