During March 2025, Swarup Ukil focused on improving CSS rendering accuracy in the servo/stylo repository by addressing a critical bug related to font-size calculations. He ensured that when font-size was specified using CSS keywords, the effective zoom factor was correctly applied, which enhanced visual consistency across different zoom levels and font-size definitions. This fix reduced rendering glitches and contributed to a more stable user interface, particularly in embedded and headless environments. Swarup’s work involved deep understanding of CSS, web rendering, and Rust, demonstrating careful attention to detail in bug fixing and coordination throughout the code review and landing process.