There are several UI design components that are important for any web design. These include the layout, color scheme, typography, and graphics.
The layout is the overall structure of the page. It should be easy to navigate and understand. The color scheme should be cohesive and easy on the eyes. The typography should be legible and easy to read. The graphics should be eye-catching and relevant to the topic.
All of these components work together to create an effective UI. When one or more of these is missing, the UI suffers. A good UI is essential for a successful website or application.