Worked on the mdn/browser-compat-data repository to enhance documentation and data accuracy for the CSS property text-decoration-thickness. Focused on clarifying its behavior and dependency on text-decoration-style in Chrome versions 87 through 89, the work involved updating both the written documentation and the associated JSON data files. Emphasized clear commit messages and proper attribution to maintain high standards of collaboration and repository hygiene. Utilized skills in CSS, JSON, and web development to improve the reliability of browser compatibility notes, enabling frontend developers to make more informed styling decisions and reducing the likelihood of misinterpretation across different browser environments.