body,html{background-color:#f5f5f5}.text-hidden{overflow:hidden;white-space:nowrap;text-overflow:ellipsis}.all_course{max-width:1300px;padding:0 15px;margin:20px auto 0;min-height:650px}.all_course h1{font-weight:400;margin-bottom:18px}.all_course .all_number{color:#3f81fa}.all_course .course_list{margin-top:20px;display:flex;flex-wrap:wrap;margin-left:-2%}.all_course .course_list .item{width:23%;margin-left:2%;background-color:#fff;margin-bottom:24px;cursor:pointer}.all_course .course_list .item:hover .item_bg img{transform:scale(1.2)}.all_course .course_list .item:hover h4{color:#2c5092}.all_course .course_list .item .item_bg{overflow:hidden}.all_course .course_list .item .item_bg img{display:block;width:100%;height:auto;max-height:158px;border-radius:4px;transition:all .5s linear}.all_course .course_list .item .item_desc{padding:0 12px 12px}.all_course .course_list .item h4{width:100%;margin:12px 0;font-size:16px;overflow:hidden;white-space:nowrap;text-overflow:ellipsis}.all_course .course_list .item span{color:#989897}.all_course #pagination{text-align:center;margin-bottom:64px}@media (max-width:970px){.all_course{padding:0 8px;margin:10px auto 0;padding-bottom:40px}.all_course .all_number,.all_course h1{display:none}.all_course .course_list{margin-top:15px;margin-left:-3%}.all_course .course_list .item{width:47%;margin-left:3%;margin-bottom:20px}.all_course .course_list .item .item_desc{padding:0 6px 6px}.all_course .course_list .item h4{margin:6px 0 2px;font-size:14px}.all_course #pagination{margin-bottom:32px}}