.yk-import-material-center{position:relative}.yk-import-material-center .el-tabs__header{display:none}.yk-import-material-center .upload-video-explain{position:absolute;top:20px;left:105px;color:#fdb939;font-size:17px;z-index:2000}.yk-import-material-center .yk-btn-new-back-s-1{position:fixed;right:53px;top:10px;z-index:2000;padding:2px 10px}.yk-import-material-center .yk-btn-new-back-s-1 .yk-icon-fanhui2{font-size:29px}.yk-import-material-center .yk-course-ware-el-card{float:left;margin-left:20px}.yk-import-material-center .lectures-wrapper-new-s-1-1 .el-dropdown{margin-top:10px}.yk-import-material-center .lectures-wrapper-new-s-1-1 .el-dropdown .create-folder .el-button{background:#fff;color:#000;border:none}.yk-import-material-center .lectures-wrapper-new-s-1-1 .el-dropdown-link:focus{outline:none}.yk-import-material-center .lectures-wrapper-new-s-1-1 .add-c-title{margin-top:10px;font-size:20px;text-align:center}.yk-import-material-center .lectures-wrapper-new-s-1-1 .yk-icon-tianjia{font-size:100px;color:#fff;border-radius:50%;border:2px solid #fff;margin-left:22px}.yk-import-material-center .video-wrapper{height:50%;width:100%;position:relative;text-align:center}.yk-import-material-center .video-wrapper .video-player{height:100%!important}.yk-import-material-center .video-wrapper .vjs-big-play-button{border-radius:50%!important;height:70px!important;width:70px!important;margin-left:-35px}.yk-import-material-center .video-wrapper .vjs-poster{background-size:100%!important}.yk-import-material-center .video-wrapper .video-js{height:100%!important}.yk-import-material-center .video-wrapper .video-poster{position:absolute;left:0;top:0;width:100%;height:100%;z-index:1000;background-color:rgba(0,0,0,.4)}.yk-import-material-center .video-wrapper video{width:100%;height:100%;-o-object-fit:fill;object-fit:fill}.yk-import-material-center .el-dialog__footer{border:1px solid #f2f6f9}.yk-source .yk-batch-delete .yk-sourse-nemu-btn-wrapper{float:right;margin-left:10px;width:90px;height:32px;background:#3fa2ff;border-radius:3px;line-height:32px;text-align:center;color:#fff}.yk-source .yk-batch-delete .yk-sourse-nemu-btn-wrapper .el-dropdown-link{font-size:11px}.yk-source .yl-last-source-tab-head-wrapper .el-tabs__nav{padding:10px 0 10px 50px}.yk-source .yl-last-source-tab-head-wrapper .el-tabs__item{font-size:18px;color:#fff}.yk-source .yl-last-source-tab-head-wrapper .el-tabs__active-bar{display:none}.yk-source .yl-last-source-tab-head-wrapper .el-pagination{position:unset!important}.PreviewResourcces{position:fixed;top:0;left:0;z-index:2111;background-color:rgba(0,0,0,.9);width:100%;height:100%;overflow:auto;padding:0 5%}.PreviewResourcces .icon-closeimg-s{size:26px;position:fixed;right:20px;font-size:35px;cursor:pointer;font-weight:bolder;bottom:20px}.xiazai{margin-right:10px;text-decoration:none;font-weight:700;font-size:18px;color:#606266;float:right}.xiazai .icon-closeimg-s{size:26px;position:fixed;right:20px;font-size:35px;cursor:pointer;font-weight:bolder;bottom:20px}.yk-source-new-wrapper .el-tabs{margin-top:20px}.yk-source-new-wrapper .el-tabs__active-bar{background-color:#374256}.yk-source-new-wrapper .el-tabs__nav-scroll{padding-left:45px;height:50px}.yk-source-new-wrapper #tab-source{color:#fff;font-size:18px;font-weight:400;font-weight:700}.yk-source-new-wrapper .el-tabs__nav-wrap:after{content:"";position:absolute;left:0;bottom:0;width:100%;height:1px;background-color:#505e75;z-index:1}.dark .el-dropdown-menu .el-dropdown-menu__item .aliyun-oss .el-button,.dark .el-dropdown-menu .el-dropdown-menu__item .create-folder .el-button,.dark .el-dropdown-menu .el-dropdown-menu__item .oss-upload_source .el-button{color:#000;background-color:inherit;border:none;font-size:14px}.dark .el-dropdown-menu .el-dropdown-menu__item .aliyun-oss .el-button .el-icon-upload,.dark .el-dropdown-menu .el-dropdown-menu__item .aliyun-oss .el-button .yk-icon-lianjie,.dark .el-dropdown-menu .el-dropdown-menu__item .create-folder .el-button .el-icon-upload,.dark .el-dropdown-menu .el-dropdown-menu__item .create-folder .el-button .yk-icon-lianjie,.dark .el-dropdown-menu .el-dropdown-menu__item .oss-upload_source .el-button .el-icon-upload,.dark .el-dropdown-menu .el-dropdown-menu__item .oss-upload_source .el-button .yk-icon-lianjie,.dark .el-dropdown-menu .el-dropdown-menu__item:hover .aliyun-oss .el-button,.dark .el-dropdown-menu .el-dropdown-menu__item:hover .create-folder .el-button,.dark .el-dropdown-menu .el-dropdown-menu__item:hover .oss-upload_source .el-button{color:#409eff}.yk-major-class-resource-wrapper{padding:0 20px;background:#fff;overflow:auto}.yk-major-class-resource-wrapper .el-tuwen-dialog .el-dialog__body div .yk-name-item{display:inline-block;vertical-align:56px}.yk-major-class-resource-wrapper .el-tuwen-dialog .el-dialog__body div .yk-que-cellname{width:88%;margin-left:9px;display:inline-block}.yk-major-class-resource-wrapper .el-tuwen-dialog .el-dialog__body span .yk-que-name{display:inline-block;margin-top:-19px;margin-left:12px}.yk-major-class-resource-wrapper .el-tuwen-dialog .yk-que-name p{padding:0 42px}.yk-major-class-resource-wrapper .el-tuwen-dialog .yk-que-name p img{padding:10px}.yk-major-class-resource-wrapper .sortable-list-item{border-bottom:1px solid #fff!important}.yk-major-class-resource-wrapper .tea-head-btns-con{padding-top:15px;text-align:left}.yk-major-class-resource-wrapper .el-dialog__body{padding:20px}.yk-major-class-resource-wrapper .el-table--enable-row-transition{height:100%;overflow:auto}.question-import-line,.unified-dialog-style{z-index:2019}.question-import-line .el-dialog__header,.unified-dialog-style .el-dialog__header{background:linear-gradient(91deg,#560848,#ec5252)}.question-import-line .el-dialog__header .el-dialog__title,.unified-dialog-style .el-dialog__header .el-dialog__title{line-height:24px;font-size:18px;color:#fff}.question-import-line .el-dialog__header .el-dialog__close,.unified-dialog-style .el-dialog__header .el-dialog__close{color:#fff}.el-dialog{z-index:2019}.el-dialog .el-dialog__header{background:linear-gradient(91deg,#560848,#ec5252)}.el-dialog .el-dialog__header .el-dialog__title{line-height:24px;font-size:18px;color:#fff}.el-dialog .el-dialog__header .el-dialog__close{color:#fff}.el-dialog .el-button--primary{background-color:#ee5b65;border-color:#ee5b65}.el-dialog .el-pagination.is-background .el-pager li:not(.disabled).active{background:#ee5b65}.el-dialog .el-table:before{display:none}.search-input .el-input{width:40%}.search-input .el-button{margin-left:15px}.page-center{text-align:center;padding:15px 0}