.ny_content .ny_news_list>ul.news_lists>li .img_box{
    position: relative;
    width: 100%;
    padding-bottom: 66.66%;
}
.ny_content .ny_news_list>ul.news_lists>li .img_box img{
    position: absolute;
    top: 0;
    left: 0;
    display: block;
    width: 100%;
    height: 100%;
    object-fit: cover;
}