.course-index-content-introduce-wrap{margin-top:30px}.course-index-content-introduce-wrap img{width:200px}.course-index-content-introduce-wrap>.tip{background-color:#f5f8f4;padding:30px 30px 20px;margin-bottom:48px;color:#333}.course-index-content-introduce-wrap>.tip>.content{margin-bottom:10px;font-size:14px}.course-index-content-introduce-wrap>.tip>.auth{font-size:16px;text-align:right}.course-index-content-wrap>.container>.tab-wrap{display:flex;align-items:center;border-bottom:1px solid #e6e6e6}.course-index-content-wrap>.container>.tab-wrap>.tab-item{font-size:18px;border-bottom:4px solid transparent;padding-bottom:7px;cursor:pointer;transition:all .3s ease}.course-index-content-wrap>.container>.tab-wrap>.tab-item+.tab-item{margin-left:50px}.course-index-content-wrap>.container>.tab-wrap>.tab-item.is-active{border-bottom-color:#00cc7e;color:#00cc7e}