We can see how many websites are out there. And how many we use in daily life. Limitless purposes for using websites, either to shop online, make some bookings, or attend courses online. That is why, in this course, we learn how to build outstanding user interfaces. We are going to build the interfaces of the E-Commerce website using HTML and Tailwind CSS. We will focus on the most common pages of E-Commerce websites, which are a products page, a page to view a product, and a shopping cart. Most of the time, it is much easier to browse websites on our phones. So, it is necessary to build the interfaces while keeping in mind viewing them through small screens. That is why we will be using a Mobile-first approach, which ensures interface suitability on small and wide screens.