.px-source-play-wrapper .course-head-con{padding:0 30px;height:54px;line-height:54px;background:#fff;color:#333;font-size:16px}.px-source-play-wrapper .course-head-con .sp-head-line{margin:0 10px}.px-source-play-wrapper .course-head-con .sp-active-name{color:#2878ff}.px-source-play-wrapper .fe-page-main{width:1200px;margin:0 auto;background:#fff}.px-source-play-wrapper .catalog-preview-con{margin-top:40px;padding:28px}.px-source-play-wrapper .catalog-preview-con .catalog-preview-left{width:804px;height:532px;position:relative}.px-source-play-wrapper .catalog-preview-con .catalog-preview-left .fe-file-video{height:100%;width:100%}.px-source-play-wrapper .catalog-preview-con .catalog-preview-left .fe-icon-quanping{position:absolute;right:5px;top:5px;cursor:pointer;font-size:20px;color:#fff;z-index:2050}.px-source-play-wrapper .catalog-preview-con .catalog-preview-left .fe-icon-quxiao{position:absolute;right:5px;top:5px;cursor:pointer;font-size:30px;color:#f15b6d;z-index:2050}.px-source-play-wrapper .catalog-preview-con .is-full-screen{position:fixed;top:0;left:0;width:100%;height:100%;z-index:2020}.px-source-play-wrapper .catalog-preview-con .catalog-preview-right{width:297px;height:500px;padding:20px;overflow:auto;background:#fff}.px-source-play-wrapper .catalog-preview-con .catalog-list-con{margin-bottom:25px}.px-source-play-wrapper .catalog-preview-con .catalog-list-con .catalog-list-title{color:#2878ff;font-size:16px;margin-bottom:10px}.px-source-play-wrapper .catalog-preview-con .catalog-list-con .catalog-list-li{line-height:25px;color:#666}.px-source-play-wrapper .catalog-preview-con .catalog-list-con .catalog-list-four{margin-left:60px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.px-source-play-wrapper .catalog-preview-con .catalog-list-con .catalog-li-title{overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.px-source-play-wrapper .catalog-preview-con .catalog-list-con .is-source{cursor:pointer}.px-source-play-wrapper .catalog-preview-con .catalog-list-con .active-select,.px-source-play-wrapper .catalog-preview-con .catalog-list-con .is-source:hover{color:#2878ff}