.prepareCourseCenterBg{background:#e9e9e9;padding:110px 0}.prepareCourseWd{width:1200px;margin:0 auto}.prepareCourseBackGround{display:flex;justify-content:space-between}.prepareCourseBackGround>div:first-child img,.prepareCourseBackGround>div:nth-child(3) img{width:400px}.prepareCourseBackGround>div:nth-child(2),.prepareCourseBackGround>div:nth-child(2) img{width:340px;height:310px}.prepareImgCenter{margin-bottom:16px}.prepareCourseBackGround>div:first-child,.prepareCourseBackGround>div:nth-child(2)>div:first-child,.prepareCourseBackGround>div:nth-child(2)>div:nth-child(2),.prepareCourseBackGround>div:nth-child(3){position:relative}.prepareCenterMOre{position:absolute;top:200px;left:120px}.prepareCenterInteraction{position:absolute;top:44px;left:90px}.prepareCenterCourse{position:absolute;top:93px;left:90px}.prepareCenterClass{position:absolute;top:230px;left:20px}.prepareCenterTitle{font-weight:700;font-size:40px}.prepareCenterMoreCls,.prepareCenterMoreCls3{border:2px solid silver;margin-top:12px;width:57px;padding:4px 6px;border-radius:6px;font-size:14px;margin-left:40px;cursor:pointer}.selectClassCourseP{font-size:18px;margin-right:20px}.prepareCenterTitle2{font-weight:700;font-size:40px;width:354px;word-break:keep-all;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;margin-bottom:30px;text-align:center}.prepareCenterClass>div{display:flex;align-items:center;padding:20px 0}.prepareCenterClass>div>span:first-child{font-size:20px;font-weight:700}.prepareCenterMoreCls3{margin-left:142px}.blackboard>img{width:100%;height:100%}.blackPosition{margin:0 auto;color:#fff;height:358px;overflow-y:auto;background-image:url(../img/palette.6b9aeaf4.png);padding:20px;background-size:760px 400px}.blackPosition::-webkit-scrollbar{width:7px;height:1px}.blackPosition::-webkit-scrollbar-thumb{border-radius:5px;background:#999}.blackPosition::-webkit-scrollbar-track{border-radius:10px;background:#f6f6f6}.blackHeight .el-menu{border:0;background:transparent;padding:20px 36px}.blackHeight .el-menu-item:hover,.blackHeight .el-submenu__title:hover{background:rgba(73,177,81,.5)}.courseDetailBg{background:#f7f7f7;min-height:3500px;padding-top:90px}.courseDetailFlex{display:flex;position:relative}.courseDetailBgIMg{background:url(../img/courseBg.e42609dc.png) no-repeat;background-size:100% 224px;margin-top:30px}.courseDetailCenter{width:1200px;margin:0 auto}.courseImgs{width:260px;height:175px;position:absolute;bottom:-201px;overflow:hidden}.courseImgs>img{width:100%;height:100%;border-radius:6px;-o-object-fit:cover;object-fit:cover}.coursedtailAb{position:absolute;left:290px;top:18px;display:flex}.coursemrTop{margin:10px 0;font-size:14px}.courseInstruct{width:100%;margin-right:42px}.courseBuy{text-align:center;width:18%}.courseBuy span{text-decoration:line-through;color:#999}.courseBuy>div{display:flex;align-items:center}.courseBuy h2{color:#ff6103;font-size:40px;margin-right:12px}.courseBuy p:last-child{background-image:linear-gradient(90deg,#ff7000,#ff9400);text-align:center;color:#fff;border-radius:42px;height:44px;line-height:44px;font-size:16px;cursor:pointer;width:116px;margin-top:20px;margin-left:25px}.courseCollect{font-size:14px;margin-top:8px;display:flex}.courseCollect>div{display:flex;align-items:center;width:100px;cursor:pointer}.courseCollect img{width:20px;margin-right:6px}.coursemrTop>span{margin-right:35px}.courseDetailLeft{position:relative;top:250px;width:1200px;margin:0 auto}.courseDetailFlexBackground{background:#fff;padding:18px;width:74%;height:660px}.CourseClassifys{width:100%;display:flex;flex-wrap:wrap;margin-bottom:30px}.CourseClassifycontent,.enterpriseCourseClassifycontent{width:900px;background:#fff;min-height:600px;margin-top:20px}.courseDetailL{width:22%;min-height:600px;background:#fff}.courseDetailBg .jieTitle{width:155px}.courseDetailBg .jieTitle,.jieHuiTitle{display:inline-block;word-break:keep-all;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;margin-right:10px}.jieHuiTitle{width:164px;color:#6a6a6a}.trySee{background:#66b46e;border-radius:14px;padding:4px 8px;color:#fff;font-size:13px}.lock{width:24px}.CourseClassifysp{width:24.7%;text-align:center;height:45px;line-height:45px;cursor:pointer;font-size:16px;border:1px solid #409eff}.courseClassifys{color:#fff;font-weight:700;background:#409eff}.courseContents{font-size:14px;display:-webkit-box;-webkit-box-orient:vertical;-webkit-line-clamp:4;overflow:hidden;line-height:24px}.teachTarget{background:#f7f7f7;border:1px solid #e5e5e5;border-radius:6px 6px 0 0;padding:18px}.courseTargetborder{border:1px solid #e5e5e5;padding:18px;min-height:200px}.courseTargetborder>span:last-child{color:#999;line-height:26px}.designFlex{display:flex;align-items:center;justify-content:space-between;height:56px;padding:12px;border-bottom:1px solid #dedede}.designFlex>p:last-child{color:#666;border:1px solid #666;font-size:14px;padding:4px 10px;border-radius:4px;cursor:pointer}.courseVideoImg{width:262px;height:160px;margin-bottom:12px;-o-object-fit:cover;object-fit:cover}.courseVideoTitle>p:first-child{word-break:keep-all;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.courseVideoTitle{padding:0 20px}.courseVideo{width:262px;height:240px;background:#fff;box-shadow:0 0 7px 0 rgba(91,91,91,.32);border-radius:5px;margin-bottom:24px;cursor:pointer;position:relative;overflow:hidden;margin-right:18px}.courseVideoFlex{display:flex;flex-wrap:wrap}.assignment{color:#999;cursor:pointer;margin-right:30px}.assignmentBorder{padding-bottom:20px;border-bottom:1px solid #dedede;margin-bottom:30px}.assignmentActive{color:#333;font-weight:700;font-size:18px}.playVideos{position:absolute;top:25%;left:42%;display:none;transition:all .4s;transform:scale(1.2)}.courseVideo:hover .playVideos{display:block;transform:scale(1.2);transition:all .5s}.courseVideo:hover .courseVideoTitle>p:first-child{color:#ff6103}.resourceImgas img{text-align:center;padding:40px;margin:0 auto;width:89%}.selectColor{color:#49b151;font-weight:700}.tiankongInput{width:218px;height:36px}.pptImgFlex{display:flex}.pptresourceImgas{width:200px;cursor:pointer;padding-bottom:6px;border-bottom:1px solid #e3e3e3;margin-bottom:10px}.pptresourceImgas:hover{background:#999}.pptresourceImgas>img{width:200px}.pptShowWhindow .el-dialog{width:72%}.coursePPtImgFlexDetial{display:flex}.coursePPtImgFlexDetial>div{height:600px;overflow:auto}.coursePPtBigIMg{width:670px;margin-left:60px}.courseDetailobjectiveFlex{display:flex;justify-content:space-between}.schoolCourse .el-tabs__header{padding:10px 36px}.enterpriseCourse .el-tabs__header,.schoolCourse .el-tabs__header{position:relative;margin:0 0 15px;background:#fff}.courseDetailBg .el-tabs__nav-wrap:after{background-color:#fff}.courseDetailBg .el-tabs__item{padding:0 14px;height:40px;box-sizing:border-box;line-height:40px;display:inline-block;list-style:none;font-size:18px;font-weight:500;color:#303133;position:relative}.courseDetailBg .el-tabs__active-bar{width:80px}.el-tabs__item.is-active{color:#409eff}.teachingOutline{background:#fff;padding:30px}.teachingOutline>p{text-align:center;margin-bottom:30px;font-size:18px;font-weight:700}.outlineBorder td{border:1px solid silver}.outlineBorder tr>td:first-child{font-size:16px;font-weight:700;padding:18px;width:122px;text-align:center}.outlineBorder tr>td:nth-child(2){width:1100px;padding:18px}.teachingFlexoutline{display:flex;align-items:center;justify-content:space-between}.sourceWd{width:260px;word-break:keep-all;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.userCourseDetail .el-menu-item{padding:0 20px!important}.resourceValueFlexwindow{width:400px;margin:0 auto;padding:50px}.resourceValueFlexwindow>div{display:flex;align-items:center;justify-content:center}.resourceValueFlexwindow h2{margin-right:22px;text-align:center;margin-bottom:36px}.uploadFlex{justify-content:space-between;margin-bottom:30px}.uploadFlex,.uploadSeacher{display:flex}.uploadSeacher button{margin-left:10px}