UI, or user interface, design is the process of generating the communication medium for the website or application. I use Figma because it has several downloadable libraries that can account for almost any type of graphical content, be it a wireframe kit, flow chart or anything of the sort. It also enables commenting, so I can explain the rational for my design decisions whilst receiving real-time feedback from my clients. If you decide to not use me to develop the final product, you can actually export all the CSS styling and build an identical copy of the design on your platform of choice. I have experience in design theory, and user experience design (UX), which allows for the creation of elegant, but relevant, solutions.