Henning Bang Halvorsen focused on maintaining the ffe-header component within the SpareBank1/designsystem repository, addressing visual layout and responsiveness issues to improve the user interface across devices. He refactored the header’s structure by replacing grid layouts with flexbox, which enhanced alignment and reduced navigation inconsistencies. Using CSS and LESS, Henning centered the navigation menu, adjusted notification bubble sizing and font, and validated these changes across multiple viewports to ensure consistent behavior. Although no new features were introduced during this period, his work stabilized the core header UI, demonstrating depth in front end development and attention to cross-device compatibility.