.product-card{margin:20px auto;background:#fff;}.product-image{background-color:#f8f9fa;text-align:center;border:solid 1px #ddd;}.product-image img{max-width:100%;height:auto;}.product-info{padding:20px;}.product-info .price{font-size:1.5rem;color:#007bff;font-weight:bold;}.product-info .code{font-size:.9rem;color:#888;}.auth-message{background-color:#c90050;color:#fff;padding:10px;text-align:center;font-weight:bold;}.auth-message.valid{background-color:#8cd44e;}.serial{background-color:#e9f6ff;padding:10px;text-align:center;color:#007bff;font-weight:500;}