Worked on the facebook/react-native repository to address cross-platform UI consistency by correcting Android’s logical border radius mapping to match iOS and CSS standards. Focused on the BorderRadiusStyle.kt component, the developer implemented changes to the borderEndStartRadius and borderStartEndRadius properties, ensuring visual alignment across platforms. Comprehensive unit testing in Kotlin validated the fix, with updates to BorderRadiusStyleTest.kt resulting in improved test outcomes. This work enhanced maintainability and fidelity of cross-platform rendering, contributing a CSS-spec-compliant solution to ReactAndroid. Collaboration with the React Native community during code review and testing ensured the solution met project standards for Android development and unit testing.