Over a two-month period, this developer contributed to front-end architecture and user interface enhancements across two repositories, LosanYuriy/team-proj-113 and StasSkv/project-dream-team-12. Work included establishing project scaffolding, refining navigation and header layouts, and updating content pages for consistency and maintainability using HTML, CSS, and JavaScript. Asset management and CSS optimization improved performance and streamlined the codebase, while responsive design principles ensured usability across devices. In StasSkv/project-dream-team-12, the developer focused on redesigning the hero section for accessibility and faster load times, optimizing background images, and maintaining a stable, maintainable codebase without introducing new bugs.