Rui worked on the NIAEFEUP/website-niaefeup-frontend repository, focusing on enhancing the navigation bar’s user experience and maintainability over a two-month period. He delivered a visual upgrade by implementing a gradient background and overlay using CSS and Svelte, ensuring the navbar remained prominent and accessible across dynamic layouts. Rui also introduced a scroll-based shadow for depth and improved code quality by cleaning up CSS and Svelte class usage, resolving lint issues to support continuous integration. His work emphasized frontend development best practices, resulting in a more visually distinct, maintainable, and user-friendly navigation experience without introducing new bugs.