Worked on the mdn/browser-compat-data repository to enhance cross-browser documentation for CSS logical properties, focusing on improving the accuracy and clarity of compatibility data. Implemented alias support for -webkit-margin-after and -webkit-margin-before, aligning them with margin-block-end and margin-block-start, and removed obsolete JSON files related to legacy -webkit properties. This update streamlined the compatibility dataset, reducing confusion for developers and ensuring more reliable guidance. The work involved data management and web development skills, utilizing JSON to update and maintain the compatibility data structure. These changes improved documentation quality and developer experience by modernizing the handling of CSS margin property aliases.