.ProductList_b2 ul li{float: left;width: 22.75%;margin-right: 3%;text-align: center;margin-bottom: 3vw;}
.ProductList_b2 ul li:nth-child(4n){margin-right: 0;}
.ProductList_b2 ul li h3{color: #666666;font-size: 18px;margin-top: 1vw;
display: -webkit-box;-webkit-line-clamp: 1;-webkit-box-orient: vertical;overflow: hidden;}
.ProductList_b2 .picimg{height: 23vw;overflow: hidden;position: relative;background-color: #f5f5f5;}
.ProductList_b2 ul li img{display: block;position: absolute;top: 50%;max-width: 95%;max-height: 95%;width: auto;
left: 50%; transform:  translate(-50%, -50%);-webkit-transform: translate(-50%, -50%);}
.ProductList_b2 ul li span{display: none;}
@media screen and (max-width: 1024px)  and (orientation: portrait) {
    .ProductList_b2 ul li h3{font-size: 16px;margin-top: 15px ;}
    .ProductList_b2 .picimg{height: 29vw;}
}
@media screen and (max-width: 640px)  and (orientation: portrait) {
    .ProductList_b2 {margin-top: 30px;}
    .ProductList_b2 ul li{width: 48.5%;margin-right: 3%;margin-bottom: 10px;}
    .ProductList_b2 ul li:nth-child(3n){margin-right: 3%;}
    .ProductList_b2 ul li:nth-child(2n){margin-right: 0;}
    .ProductList_b2 ul li h3{font-size: 3.8vw;margin-top: 5px;}
    .ProductList_b2 .picimg{height: 50vw;}
    .class_list.ProductList_b2 .picimg{height: 40vw;}
    .class_list.ProductList_b2 .picimg img{max-height: 100%;max-width: 100%;width: 100%;height: 100%;object-fit:cover;}
}