Worked on the digdir/designsystemet repository to deliver a targeted fix for a UI stability issue affecting breadcrumb navigation across different viewport sizes. Focused on refining the CSS media queries around the 650px breakpoint, the work improved cross-device consistency and reduced visual glitches in navigation components. Applied expertise in CSS and front end development to align the solution with existing design tokens and architecture, ensuring a predictable and accessible user experience from mobile to desktop. The approach emphasized clean code and clear documentation, addressing both performance and accessibility goals while enhancing the reliability of responsive design within the design system.