Worked on maintaining and improving the facebook/react-strict-dom repository, focusing on stability and reliability rather than new feature development. Addressed a critical issue in the PostCSS configuration by ensuring both source files and node_modules were properly included in the processing pipeline, which resolved environment-specific styling regressions in React applications. Utilized JavaScript and front end development skills to deliver a targeted bug fix that improved consistency of styles across local and CI environments. This work reduced debugging time and supported smoother developer workflows, demonstrating a methodical approach to maintenance and cross-environment compatibility within a modern React codebase. No new features were released.