If you sell products online via a website, you need a shopping cart. A shopping cart is a program that allows the buyer to select the products you're buying. You can also calculate tax and shipping cost. If necessary, you can process the payment and record the billing and shipping address. The shopping carts are so common that many buyers will not be interested in a website that does not have one.
Corporate website
Here we have an example of web application using php 7, bootstrap 4, Css3, and MySQL.
Simple web pages
The examples shown here are made with Html5, CSS3, Photoshop and visual effects.