Tetiana Ustimenko redesigned and implemented a responsive footer component for the Obolonska/team-project repository, focusing on consistent branding and usability across devices. She utilized HTML, CSS, and responsive design principles to create a maintainable layout that included logo, navigation, and contact elements, ensuring seamless adaptation to various screen sizes. In addition to the new feature, Tetiana addressed a CSS build issue by identifying and removing an extraneous blank line that was causing deployment failures, thereby improving build reliability. Her work emphasized clean, traceable commits and contributed to a more stable, maintainable front-end codebase aligned with business requirements.