Andrei contributed to the freeCodeCamp/freeCodeCamp repository by refining the Inline-Block Lesson within the curriculum, focusing on improving the clarity and consistency of CSS instruction. He updated lesson examples to reduce ambiguity around the CSS display property, making the teaching materials more accessible and maintainable for students and curriculum authors. His work involved close collaboration with the curriculum team and demonstrated strong front end development skills, particularly in CSS and HTML. By tracking changes through a focused commit and referencing the related issue, Andrei ensured clear traceability for future audits, reflecting a thoughtful and methodical approach to curriculum engineering.