.banner{width:100%;height:670px;margin:0 auto}.banner img{display:block;width:100%;height:100%;object-fit:cover;margin:0 auto}.main{width:90%;margin:10px auto 0;display:flex;justify-content:space-evenly;flex-wrap:wrap;align-items:center}.main .item{width:300px;display:flex;flex-direction:column;align-items:center;background-color:#ebebeb;border-radius:10px;overflow:hidden;margin-top:20px;padding-bottom:20px}.main .item .image{width:100%;height:200px;overflow:hidden}.main .item .image img{width:100%}.main .item .title{font-size:20px;font-weight:600;margin-top:10px}.main .item .introduce{font-size:16px;color:#666;margin-top:10px}