.book-box{width:100%}.book-box .book-item{float:left;width:203px;height:300px;margin-bottom:10px}.book-box .book-item .book-content{height:100%;margin:22px;text-align:center}.book-box .book-item .book-content .book-img{width:160px;height:225px;border:1px solid #e5e5e5}.book-box .book-item .book-content .book-img img{width:100%;height:100%}.book-box .book-item .book-content .book-name{font-size:14px;color:#333;margin-top:17px}.product_main{width:725px;margin-top:50px}.product_main .product-img{float:left;width:160px;height:225px;border:1px solid #e5e5e5}.product_main .product-img img{width:100%;height:100%}.product_main .product-info{float:left;height:225px;padding:8px 0 0 33px}.product_main .product-info .product-title{font-size:18px;color:#000;font-weight:bold;width:530px;}.product_main .product-info .product-mark{margin-top:25px;margin-bottom:28px;line-height:18px;letter-spacing:1px}.product_main .product-info .product-mark p{color:#333}.product_main .product-info .product-mark p .justify{letter-spacing:1px}.product_main .product-info .product-mark p .justify.w2{letter-spacing:28px;margin-right:-28px}.product_main .product-info .product-mark p .justify.w3{letter-spacing:8px;margin-right:-8px}.product_main .online-btn{display:block;width:150px;height:40px;background-color:#2bb673;text-align:center;line-height:40px;color:#fff;font-size:16px;border-radius:4px;}.product-intro{width:725px;margin-top:70px}.product-intro .intro-title{padding-bottom:16px;font-size:20px;color:#2bb673;border-bottom:1px solid #f3f3f3}.product-intro .intro-content{margin-top:20px;line-height:28px}.product-intro .intro-content p{color:#000;font-size:14px}