Project: lowdb
Task (moderate): 1) Add product detail page with path '/products/:product_id'
2) Add classNames for UI: .product-card, .product-image, .product-name, .product-price, .product_quantity, .product-description
3) In /product page, When .product-card clicked, goto related product detail page
4) create css file to beautify CSS
5) If Not Found, show 'Product Not Found'