.product_list .main_wrap .pub_r_con .p_list li a .pic_box img{
    height: 220px;
    object-fit: contain;
}
@media (max-width: 500px) {
    .product_list .main_wrap .pub_r_con .p_list li a .pic_box img{
        height: 120px;
    }
    .product_list .main_wrap .pub_r_con .p_list li{
        margin-bottom: 10px;
    }
}