In the early days of computing, people used screens and interface designs that were functional, but not always attractive. The goal was to make it easy for users to use the computer and perform their tasks. Later, when graphical interfaces became commonplace, the look and feel of UI design became noticeable.
One reason there has been a change in how people use computers is due to the emergence of smartphones and tablets. These devices are used to interact with digital products on small screens. This means that designers have to make the most of the space on these devices, and the UI must be visually appealing as well as functional.
The look and feel of user interface (UI) reflects how people use technology today. As we become increasingly reliant on digital products and services, the UI will have a greater impact on how we are made to feel and think about technology.