Gibran Daffa modernized Debian installation instructions and improved UI readability for the php/web-php repository. He updated documentation to align with current Debian standards by migrating to the deb822 source format, removing deprecated apt-transport-https, and replacing apt-get references with apt, ensuring clarity and maintainability. Alongside these documentation enhancements, Gibran addressed a front-end issue by refining CSS for code syntax highlighting, specifically making operator backgrounds transparent to improve readability. His work demonstrated proficiency in CSS, Linux administration, and package management, delivering both technical accuracy and user-focused improvements. The changes reduced onboarding friction and supported long-term maintainability of project assets.