Over a two-month period, contributed front-end features to two repositories, focusing on responsive design and user interface enhancements. Developed a mobile menu component for MarneyDude/404_not_found, implementing CSS and HTML to create a reusable navigation element with overlay, menu items, and action buttons for improved mobile usability. For Arinalekseewa/Portfolio-Jefferson, delivered a hero section featuring responsive, retina-ready background images and interactive social links, addressing image path reliability and ensuring consistent cross-device presentation. Work emphasized clean structure, maintainable code, and scalability, utilizing core front-end development skills in CSS, HTML, and responsive design to address navigation and visual consistency challenges.