Gregory David enhanced accessibility in the AxaFrance/design-system repository by updating the Alert component to support a customizable aria-label for its close button. Using React with JavaScript and TypeScript, he enabled developers to override the default 'close' label via component props, directly addressing accessibility issue #982. This technical approach improved the design-system’s compliance with assistive technologies, reducing the risk of mislabeling and enhancing user experience for applications that rely on the Alert component. The work demonstrated a focused application of accessibility and front-end development skills, delivering a targeted feature that deepened the accessibility posture of the shared component library.