Worked on the yypang2/SECP1513202420251-09 repository to prototype and refine a personal portfolio presentation. Developed a lightweight HTML portfolio page to evaluate layout and presentation strategies, then removed it after assessment, demonstrating an iterative approach to front end development. Added a Markdown-based portfolio reference to direct viewers to the author’s work, emphasizing clear documentation and accessibility. Focused on repository hygiene by removing empty placeholder files, reducing clutter and maintaining mainline stability. Utilized CSS and HTML for front end prototyping and portfolio management, with all changes carefully scoped to preserve repository integrity and support future development and documentation clarity.