Mustafa Sayyed enhanced the interledger.org-developers repository by redesigning the top navigation to improve usability and accessibility. He implemented an underline active-state indicator, replacing the previous solid border, to provide clearer visual feedback for users. Using CSS and HTML, Mustafa unified active menu item styles within the FoundationHeader component, ensuring consistent behavior across different screen sizes. His approach consolidated redundant CSS rules, reducing the overall CSS footprint and simplifying future maintenance. The work focused on front end development and UI/UX, resulting in faster, more reliable navigation and better alignment with the design system, though it addressed only one feature in this period.