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.top-center-container{left:0px;top:0px;width:1260px;height:440px;-webkit-border-radius:0px;-moz-border-radius:0px;border-radius:0px;position:relative;clear:none;}.center > .center-i > .top-center-container > .logo{left:0px;top:19px;width:234px;height:27px;-webkit-border-radius:0px;-moz-border-radius:0px;border-radius:0px;position:absolute;clear:none;z-index:1;color:#fff;font-size:15px;}.center > .center-i > .top-center-container > .logo > img{width:234px;height:27px;-webkit-border-radius:0px;-moz-border-radius:0px;border-radius:0px;}.center > .center-i > .top-center-container > .personal{left:1154px;top:0px;height:22px;-webkit-border-radius:0px;-moz-border-radius:0px;border-radius:0px;margin-top:21px;float:right;font-size:0px;margin-right:15px;position:absolute;}.center > .center-i > .top-center-container > .personal.main-site-link{left:1000px;}.center
> .center-i
> .top-center-container
> .personal
> .personal-t
> .personal.personal-container{left:0px;top:0px;height:22px;-webkit-border-radius:0px;-moz-border-radius:0px;border-radius:0px;position:relative;clear:none;font-size:0px;line-height:22px;}.center
> .center-i
> .top-center-container
> .personal
> .personal-t
> .personal.personal-container
> a{display:inline-block;width:100%;height:22px;}.center
> .center-i
> .top-center-container
> .personal
> .personal-t
> .personal.personal-container
> a
> span{line-height:22px;display:inline-block;width:100%;font-family:微软雅黑, 'Microsoft YaHei';font-size:14px;color:white;text-align:center;vertical-align:middle;}.center > .center-i > .top-center-container > .avatar{left:1230px;top:0px;width:auto;height:30px;-webkit-border-radius:30px;-moz-border-radius:30px;border-radius:30px;float:right;margin-top:17px;clear:none;z-index:3;font-size:12px;position:absolute;}.center > .center-i > .top-center-container > .avatar .unlogin:hover{opacity:0.7;}.center > .center-i > .top-center-container > .avatar .login{width:30px;}.center > .center-i > .top-center-container > .avatar .arrow{display:none;}.center > .center-i > .top-center-container > .live-box{left:960px;top:96px;width:300px;height:260px;-webkit-border-radius:0px;-moz-border-radius:0px;border-radius:0px;position:absolute;clear:none;}.index-container > .center{margin:0 auto;left:0px;top:0px;width:1260px;height:440px;-webkit-border-radius:0px;-moz-border-radius:0px;border-radius:0px;position:relative;clear:none;font-size:0px;}.index-nav > .index-nav-i > .u-nav-container{left:0px;top:0px;width:1260px;height:120px;-webkit-border-radius:0px;-moz-border-radius:0px;border-radius:0px;position:relative;clear:none;font-size:0px;background-color:white;margin:0px auto;}.index-nav > .index-nav-i > .u-nav-container > .u-nav-item{display:block;width:20%;height:100%;color:#333333;}.index-nav > .index-nav-i > .u-nav-container > .u-nav-item:hover{color:#578bff;}.index-nav > .index-nav-i > .u-nav-container > .u-nav-item > div{height:100%;}.index-nav > .index-nav-i > .u-nav-container > .u-nav-item > div > .course{left:108px;top:29px;width:26px;height:32px;-webkit-border-radius:0px;-moz-border-radius:0px;border-radius:0px;position:absolute;clear:none;font-size:0px;background:url(//edu-image.nosdn.127.net/F5C6012FD0AD33FC905A65023B78AA23.png?imageView&thumbnail=1053y32&quality=100);}.index-nav
> .index-nav-i
> .u-nav-container
> .u-nav-item
> div
> .course-label{left:82px;top:68px;width:72px;height:24px;-webkit-border-radius:0px;-moz-border-radius:0px;border-radius:0px;position:absolute;clear:none;font-size:0px;line-height:24px;}.index-nav
> .index-nav-i
> .u-nav-container
> .u-nav-item
> div
> .course-label
> span{line-height:24px;display:inline-block;width:100%;font-family:微软雅黑, 'Microsoft YaHei';font-size:18px;text-align:center;vertical-align:middle;}.index-nav > .index-nav-i > .u-nav-container > .u-nav-item > div > .school{left:361px;top:29px;width:30px;height:31px;-webkit-border-radius:0px;-moz-border-radius:0px;border-radius:0px;position:absolute;clear:none;font-size:0px;background:url(//nos.netease.com/edu-image/fd7554e4-06f4-4bc7-b554-3f8f81494a9d.png) no-repeat;-webkit-background-size:100% 100%;-moz-background-size:100%;-o-background-size:100%;background-size:100%;}.index-nav
> .index-nav-i
> .u-nav-container
> .u-nav-item
> div
> .school-label{left:284px;top:68px;width:180px;height:24px;-webkit-border-radius:0px;-moz-border-radius:0px;border-radius:0px;position:absolute;clear:none;font-size:0px;line-height:24px;}.index-nav
> .index-nav-i
> .u-nav-container
> .u-nav-item
> div
> .school-label
> span{line-height:24px;display:inline-block;width:100%;font-family:微软雅黑, 'Microsoft YaHei';font-size:18px;text-align:center;vertical-align:middle;}.index-nav > .index-nav-i > .u-nav-container > .u-nav-item > div > .outline{left:617px;top:29px;width:26px;height:32px;-webkit-border-radius:0px;-moz-border-radius:0px;border-radius:0px;position:absolute;clear:none;font-size:0px;background:url(//edu-image.nosdn.127.net/F5C6012FD0AD33FC905A65023B78AA23.png?imageView&thumbnail=1053y32&quality=100) -512px center;}.index-nav
> .index-nav-i
> .u-nav-container
> .u-nav-item
> div
> .outline-label{left:576px;top:69px;width:108px;height:24px;-webkit-border-radius:0px;-moz-border-radius:0px;border-radius:0px;position:absolute;clear:none;font-size:0px;line-height:24px;}.index-nav
> .index-nav-i
> .u-nav-container
> .u-nav-item
> div
> .outline-label
> span{line-height:24px;display:inline-block;width:100%;font-family:微软雅黑, 'Microsoft YaHei';font-size:18px;text-align:center;vertical-align:middle;}.index-nav > .index-nav-i > .u-nav-container > .u-nav-item > div > .sprint{left:871px;top:29px;width:29px;height:32px;-webkit-border-radius:0px;-moz-border-radius:0px;border-radius:0px;position:absolute;clear:none;font-size:0px;background:url(//edu-image.nosdn.127.net/F5C6012FD0AD33FC905A65023B78AA23.png?imageView&thumbnail=1053y32&quality=100) -767px center;}.index-nav > .index-nav-i > .u-nav-container > .u-nav-item > div > .discuss{left:1126px;top:29px;width:32px;height:32px;-webkit-border-radius:0px;-moz-border-radius:0px;border-radius:0px;position:absolute;clear:none;font-size:0px;background:url(//edu-image.nosdn.127.net/F5C6012FD0AD33FC905A65023B78AA23.png?imageView&thumbnail=1053y32&quality=100) -1021px center;}.index-nav
> .index-nav-i
> .u-nav-container
> .u-nav-item
> div
> .sprint-label{left:832px;top:69px;width:108px;height:24px;-webkit-border-radius:0px;-moz-border-radius:0px;border-radius:0px;position:absolute;clear:none;font-size:0px;line-height:24px;}.index-nav
> .index-nav-i
> .u-nav-container
> .u-nav-item
> div
> .sprint-label
> span{line-height:24px;display:inline-block;width:100%;font-family:微软雅黑, 'Microsoft YaHei';font-size:18px;text-align:center;vertical-align:middle;}.index-nav
> .index-nav-i
> .u-nav-container
> .u-nav-item
> div
> .discuss-label{left:1088px;top:69px;width:108px;height:24px;-webkit-border-radius:0px;-moz-border-radius:0px;border-radius:0px;position:absolute;clear:none;font-size:0px;line-height:24px;}.index-nav
> .index-nav-i
> .u-nav-container
> .u-nav-item
> div
> .discuss-label
> span{line-height:24px;display:inline-block;width:100%;font-family:微软雅黑, 'Microsoft YaHei';font-size:18px;text-align:center;vertical-align:middle;}.index-nav > .index-nav-i > .u-nav-container > .e-hover-source.course-hover{left:0;top:20px;width:20%;height:100px;-webkit-border-radius:0px;-moz-border-radius:0px;border-radius:0px;position:absolute;clear:none;z-index:1;font-size:0px;cursor:auto;}.index-nav
> .index-nav-i
> .u-nav-container
> .e-hover-source.course-hover:hover{cursor:pointer;}#j-index-course-cate{width:100%;height:auto;background:#fff;margin-left:-10px;margin-top:100px;}#j-index-course-cate > a > .cate-item{width:100%;height:62px;color:#333;font-size:18px;line-height:62px;text-align:center;}#j-index-course-cate > a > .cate-item:hover{color:#fff;background:#578bff;}.index-container > .index-nav{left:0px;top:0px;width:100%;height:auto;-webkit-border-radius:0px;-moz-border-radius:0px;border-radius:0px;position:relative;clear:none;font-size:0px;background-color:white;}.e-hover-source:hover .e-hover-target{display:block;}.e-hover-source:hover .e-hover-code{display:block;}.e-hover-target{display:none;position:absolute;left:50%;margin-top:-2px;padding-top:14px;top:100%;}.e-hover-target.left{top:-50%;margin-right:-2px;padding-right:14px;padding-top:0px;right:100%;left:auto;}.e-hover-target.right{top:-50%;margin-left:-2px;padding-left:14px;padding-top:0px;right:auto;left:100%;}.e-hover-code{display:none;}.e-hover-arrow{position:absolute;top:5px;width:1px;height:1px;border:9px solid transparent;border-bottom-color:#ddd;z-index:3;border-top-width:0px;}.e-hover-arrow.left{position:absolute;width:1px;right:5px;height:1px;border:9px solid transparent;border-left-color:#ddd;z-index:3;border-right-width:0px;}.e-hover-arrow.right{position:absolute;width:1px;left:5px;height:1px;border:9px solid transparent;border-right-color:#ddd;z-index:3;border-left-width:0px;}.e-hover-arrow-border{position:absolute;width:1px;height:1px;top:6px;border:9px solid transparent;border-bottom-color:#fff;border-top-width:0px;z-index:3;}.e-hover-arrow-border.left{position:absolute;width:1px;height:1px;right:6px;border:9px solid transparent;border-left-color:#fff;border-right-width:0px;z-index:3;}.e-hover-arrow-border.right{position:absolute;width:1px;height:1px;left:6px;border:9px solid transparent;border-right-color:#fff;border-left-width:0px;z-index:3;}.e-hover-content{-webkit-box-shadow:0 2px 4px 0 rgba(0, 0, 0, 0.1);-moz-box-shadow:0 2px 4px 0 rgba(0, 0, 0, 0.1);box-shadow:0 2px 4px 0 rgba(0, 0, 0, 0.1);padding:15px 15px 15px;background:#fff;border:1px solid #ddd;}.course > .course-i > .u-course-container{left:0px;top:0px;width:1260px;height:auto;-webkit-border-radius:0px;-moz-border-radius:0px;border-radius:0px;position:relative;clear:none;background-color:whitesmoke;margin:0px auto;margin-bottom:60px;}.course > .course-i > .u-course-container > .course-title{left:0px;top:0px;width:1260px;height:40px;-webkit-border-radius:0px;-moz-border-radius:0px;border-radius:0px;position:relative;clear:none;font-size:0px;margin:60px 0px 0px;line-height:40px;}.course > .course-i > .u-course-container > .course-title > span{line-height:40px;display:inline-block;width:100%;font-family:微软雅黑, 'Microsoft YaHei';font-size:30px;color:#333333;text-align:center;vertical-align:middle;}.course > .course-i > .u-course-container > .course-school{left:0px;top:0px;width:1260px;height:21px;-webkit-border-radius:0px;-moz-border-radius:0px;border-radius:0px;position:relative;clear:none;margin:27px 0px 0px;line-height:21px;}.course > .course-i > .u-course-container > .course-school > h2{text-align:center;font-size:16px;color:#666;}.course > .course-i > .u-course-container > .course-school > span{line-height:21px;display:inline-block;width:100%;font-family:微软雅黑, 'Microsoft YaHei';font-size:16px;color:#666666;text-align:center;vertical-align:middle;}.course > .course-i > .u-course-container > .course-box{left:0px;top:0px;width:1260px;height:auto;-webkit-border-radius:0px;-moz-border-radius:0px;border-radius:0px;position:relative;clear:none;margin:50px 0px 0px;}.course > .course-i > .u-course-container > .e-hover-source.course-hover{left:263px;top:135px;width:100px;height:0px;-webkit-border-radius:0px;-moz-border-radius:0px;border-radius:0px;position:absolute;clear:none;cursor:pointer;}.course
> .course-i
> .u-course-container
> .e-hover-source.course-hover
.e-hover-target.right{top:-51%;margin-left:-6px;padding-left:19px;padding-top:13px;}.cur .e-hover-target.right{display:block;}.course
> .course-i
> .u-course-container
> .e-hover-source.course-hover
.e-hover-content{-webkit-box-shadow:none;-moz-box-shadow:none;box-shadow:none;padding:0;background:none;border-color:#ff7a3e;}.course
> .course-i
> .u-course-container
> .e-hover-source.course-hover
.e-hover-arrow.right{margin-top:3px;left:8px;border:5px solid transparent;border-right-color:#ff7a3e;}.course
> .course-i
> .u-course-container
> .e-hover-source.course-hover
.e-hover-arrow-border.right{margin-top:3px;left:9px;border:5px solid transparent;border-right-color:#fcf3ef;}.course
> .course-i
> .u-course-container
> .e-hover-source.course-hover
> .e-hover-target.right
> .e-hover-arrow.right{top:18px !important;}.course
> .course-i
> .u-course-container
> .e-hover-source.course-hover
> .e-hover-target.right
> .e-hover-arrow-border.right{top:18px !important;}.course
> .course-i
> .u-course-container
> .e-hover-source.course-hover
> .e-hover-target.right
> .e-hover-content
> .course-hover-container{left:0px;top:0px;width:195px;height:26px;-webkit-border-radius:0px;-moz-border-radius:0px;border-radius:0px;position:relative;clear:none;}.course
> .course-i
> .u-course-container
> .e-hover-source.course-hover
> .e-hover-target.right
> .e-hover-content
> .course-hover-container
> .course-hover-txt{left:0px;top:0px;width:195px;height:26px;-webkit-border-radius:0px;-moz-border-radius:0px;border-radius:0px;position:absolute;clear:none;font-size:0px;background-color:#fcf3ef;line-height:26px;}.course
> .course-i
> .u-course-container
> .e-hover-source.course-hover
> .e-hover-target.right
> .e-hover-content
> .course-hover-container
> .course-hover-txt
> span{line-height:26px;display:inline-block;width:100%;font-family:微软雅黑, 'Microsoft YaHei';font-size:12px;color:#ff7a3e;text-align:center;vertical-align:middle;}.index-container > .course{left:0px;top:0px;width:100%;height:auto;-webkit-border-radius:0px;-moz-border-radius:0px;border-radius:0px;position:relative;clear:none;font-size:0px;background-color:whitesmoke;}.e-hover-source:hover .e-hover-target{display:block;}.e-hover-source:hover .e-hover-code{display:block;}.e-hover-target{display:none;position:absolute;left:50%;margin-top:-2px;padding-top:14px;top:100%;}.e-hover-target.left{top:-50%;margin-right:-2px;padding-right:14px;padding-top:0px;right:100%;left:auto;}.e-hover-target.right{top:-50%;margin-left:-2px;padding-left:14px;padding-top:0px;right:auto;left:100%;}.e-hover-code{display:none;}.e-hover-arrow{position:absolute;top:5px;width:1px;height:1px;border:9px solid transparent;border-bottom-color:#ddd;z-index:3;border-top-width:0px;}.e-hover-arrow.left{position:absolute;width:1px;right:5px;height:1px;border:9px solid transparent;border-left-color:#ddd;z-index:3;border-right-width:0px;}.e-hover-arrow.right{position:absolute;width:1px;left:5px;height:1px;border:9px solid transparent;border-right-color:#ddd;z-index:3;border-left-width:0px;}.e-hover-arrow-border{position:absolute;width:1px;height:1px;top:6px;border:9px solid transparent;border-bottom-color:#fff;border-top-width:0px;z-index:3;}.e-hover-arrow-border.left{position:absolute;width:1px;height:1px;right:6px;border:9px solid transparent;border-left-color:#fff;border-right-width:0px;z-index:3;}.e-hover-arrow-border.right{position:absolute;width:1px;height:1px;left:6px;border:9px solid transparent;border-right-color:#fff;border-left-width:0px;z-index:3;}.e-hover-content{-webkit-box-shadow:0 2px 4px 0 rgba(0, 0, 0, 0.1);-moz-box-shadow:0 2px 4px 0 rgba(0, 0, 0, 0.1);box-shadow:0 2px 4px 0 rgba(0, 0, 0, 0.1);padding:15px 15px 15px;background:#fff;border:1px solid #ddd;}.teacher > .teacher-i > .u-teacher-container{left:0px;top:0px;width:1260px;height:694px;-webkit-border-radius:0px;-moz-border-radius:0px;border-radius:0px;position:relative;clear:none;margin:0px auto;}.teacher > .teacher-i > .u-teacher-container > .teacher-title{left:0px;top:90px;width:1260px;height:36px;-webkit-border-radius:0px;-moz-border-radius:0px;border-radius:0px;position:absolute;clear:none;font-size:0px;line-height:36px;}.teacher > .teacher-i > .u-teacher-container > .teacher-title > span{line-height:36px;display:inline-block;width:100%;font-family:微软雅黑, 'Microsoft YaHei';font-size:36px;color:white;text-align:center;vertical-align:middle;}.teacher > .teacher-i > .u-teacher-container > .teacher-list{left:0px;top:196px;width:1260px;height:408px;-webkit-border-radius:0px;-moz-border-radius:0px;border-radius:0px;position:absolute;clear:none;}.index-container > .teacher{left:0px;top:0px;width:100%;height:auto;-webkit-border-radius:0px;-moz-border-radius:0px;border-radius:0px;position:relative;clear:none;font-size:0px;background:url(//edu-image.nosdn.127.net/4CEBAEA89A08131E7ADD8D4C557B4EA2.jpg?imageView&thumbnail=1920y694&quality=100);}.discuss > .discuss-i > .u-discuss-container{left:0px;top:0px;width:1260px;height:616px;-webkit-border-radius:0px;-moz-border-radius:0px;border-radius:0px;position:relative;clear:none;font-size:0px;margin:0px auto;}.discuss > .discuss-i > .u-discuss-container > .discuss-title{left:0px;top:90px;width:1260px;height:36px;-webkit-border-radius:0px;-moz-border-radius:0px;border-radius:0px;position:absolute;clear:none;font-size:0px;line-height:36px;}.discuss > .discuss-i > .u-discuss-container > .discuss-title > span{line-height:36px;display:inline-block;width:100%;font-family:微软雅黑, 'Microsoft YaHei';font-size:36px;color:#333333;text-align:center;vertical-align:middle;}.discuss > .discuss-i > .u-discuss-container > .discuss-list{left:0px;top:176px;width:1260px;height:240px;-webkit-border-radius:0px;-moz-border-radius:0px;border-radius:0px;position:absolute;clear:none;font-size:0px;}.discuss > .discuss-i > .u-discuss-container > .discuss-link{left:0px;top:476px;width:230px;height:50px;-webkit-border-radius:100px;-moz-border-radius:100px;border-radius:100px;position:relative;clear:none;font-size:0px;border-style:solid;border-color:#578bff;border-width:1px;margin:0px auto;line-height:50px;}.discuss > .discuss-i > .u-discuss-container > .discuss-link:hover{background:#578bff;cursor:pointer;color:#fff;}.discuss > .discuss-i > .u-discuss-container > .discuss-link:hover > a > span{color:#fff;}.discuss > .discuss-i > .u-discuss-container > .discuss-link > a{display:inline-block;width:100%;height:50px;}.discuss > .discuss-i > .u-discuss-container > .discuss-link > a > span{line-height:50px;display:inline-block;width:100%;font-family:微软雅黑, 'Microsoft YaHei';font-size:22px;color:#578bff;text-align:center;vertical-align:middle;}.index-container > .discuss{left:0px;top:0px;width:100%;height:auto;-webkit-border-radius:0px;-moz-border-radius:0px;border-radius:0px;position:relative;clear:none;font-size:0px;background-color:whitesmoke;}