During March 2025, Matteo Rizzo enhanced the authentication user interface for the InfraWatch-inc/web-data-viz repository, focusing on creating a more consistent and intuitive onboarding experience. He consolidated the registration and login flows by standardizing back navigation and refining the styling of Sign Up and Login buttons. Using HTML and CSS, Matteo improved semantic labeling for authentication actions, which helps reduce user friction during onboarding. His work centered on front-end development, delivering a cohesive navigation layout and UI polish through a series of targeted commits. The depth of these changes established a solid foundation for future usability and user experience improvements.