/* ѧϰ֪ʶ */
.xuexi_zs img{
    width: 80px;
    height: 80px;
    border-radius: 4px;
    padding-right: 6px;
    box-sizing: border-box;
}
.xuexi_zs .text{
    overflow: hidden;
    text-overflow: ellipsis;
    display: -webkit-box;
    -webkit-line-clamp: 3;
    -webkit-box-orient: vertical;
    line-height: 20px;
    font-size: 14px;
    color: #777;
}
.xuexi_zs li{
    width: 376px;
    padding: 8px;
    margin-top: 30px;
    box-sizing: border-box;
    margin-right: 36px;
}
.xuexi_zs li:hover {
    box-shadow: 0 0.3px 6px rgb(0 0 0 / 15%);
    transition: all 0.3s;
}
.xuexi_zs li:nth-child(3n){
    margin-right: 0;
}