Iiro Poutiainen contributed targeted front-end improvements to the Tietokilta/web repository, focusing on resolving UI regressions and enhancing layout stability. Over two months, he addressed two critical bugs by leveraging CSS Grid and TypeScript within a React codebase. His work included restoring centered stop names on the Infoscreen Stop Information display through a three-column grid layout, which improved visual consistency and maintainability. Additionally, he eliminated horizontal overflow in the allergy details section by refining CSS class constraints, thereby enhancing readability across devices. These scoped, low-risk changes demonstrated careful debugging and a methodical approach to UI/UX and responsive design challenges.