Milo contributed to browser engine development in the JunkFood02/ladybird and SerenityOS/serenity repositories, focusing on web standards compliance and rendering accuracy. Over two months, Milo enhanced CSS serialization and parsing, improved character encoding handling, and corrected XML namespace assignment, using C++ and JavaScript to address subtle interoperability issues. In Ladybird, Milo preserved CSS color names during serialization and fixed surrogate pair handling in character data, ensuring correct rendering and fewer test regressions. For SerenityOS, Milo resolved Flexbox alignment inconsistencies by mapping self-start and self-end to standard values, improving layout correctness. The work demonstrated careful attention to standards and cross-browser behavior.