The next stage after the preparation of the mock-ups is UI Design, i.e., the development of how the website user interface or software will look visually. In the course of designing, a visual style is chosen. It includes aspects such as typography, icons, and colors, but also the use of space between individual elements.
Mockups Design is also characterized by the fact that prepared screens look the same as the final product will look like. One of the goals of UI Design, in addition to the visualization of the interface, is the preparation of files for prototypers and programmers.