Yanira Correo developed an Accessibility Toolbar feature for the exelearning/exelearning repository, introducing an uppercase text toggle to enhance readability for users with diverse needs. She implemented the toggle using JavaScript and TypeScript, updating the UI to allow users to switch displayed text to uppercase and ensuring their preference persisted across sessions via localStorage. The solution was integrated with the existing accessibility framework, supporting both keyboard navigation and screen-reader compatibility. By focusing on front end development and leveraging CSS for styling, Yanira delivered a backward-compatible feature that improved accessibility options while minimizing disruption to existing users and maintaining code quality.