Worked on enhancing the STYLEGUIDE documentation within the jenkins-infra/jenkins.io repository, focusing on improving clarity, accuracy, and user experience. The approach involved consolidating content, removing duplicated wording, correcting grammar and typographical errors, and updating outdated references and URLs. By leveraging technical writing and documentation skills, and utilizing Markdown and asciidoc, the developer refreshed the STYLEGUIDE to better support onboarding and reduce user confusion. Collaboration was demonstrated through co-authored commits and clear commit messages, ensuring traceability and code-review discipline. The result is a more maintainable and user-friendly documentation resource that aligns with current project standards and structure.