Worked on enhancing documentation usability for the Elektrobit/ebcl_template repository by focusing on both content structure and user interface styling. Addressed readability issues in SUMMARY.md by correcting indentation, making it easier for contributors to navigate and understand the documentation hierarchy. Improved the documentation sidebar by implementing active state styling and highlighting the current chapter, which streamlines navigation and orientation for users. These updates were achieved using CSS for styling and Markdown for content formatting, demonstrating attention to detail in documentation and UI consistency. The work contributed to a smoother onboarding process and a more cohesive contributor experience without introducing new bugs.