Vedana Voronina developed foundational cross-platform WebAssembly support for Kotlin CSS in the JetBrains/kotlin-wrappers repository. She introduced a wasmJs target to the kotlin-css module, leveraging Kotlin Multiplatform and build configuration skills to enable compiling Kotlin CSS to WebAssembly JavaScript. By opting into ExperimentalWasmDsl and exposing wasmJs() as part of the Kotlin target suite, Vedana improved the portability and runtime performance of CSS in WebAssembly environments. This work positioned Kotlin CSS to reduce JavaScript bundle size and enhance startup times across supported browsers. The contribution demonstrated focused engineering depth in Gradle build configuration and WebAssembly integration for multiplatform projects.