Duje Jelavic contributed to the nikykiky/zlatni repository over a two-month period, focusing on front end development and file manipulation. He built a blinking text demo page using HTML, CSS, and jQuery, implementing a timed animation that visually demonstrates jQuery effects for onboarding and validation purposes. Duje also established repository scaffolding by adding structured placeholder text files, laying groundwork for future documentation and asset management. In March, he maintained data integrity by updating a non-user-facing text file, ensuring clear commit traceability. His work emphasized maintainable code structure and clear documentation, though the scope remained limited to foundational features and updates.