For effective web accessibility, prioritizing semantic HTML is paramount, leveraging native elements like `` and `` to convey inherent meaning to assistive technologies. When semantic HTML isn't sufficient for complex widgets, judicious use of ARIA attributes (e.g., `aria-label`, `role="dialog"`) becomes essential to enhance understanding. Ensuring full keyboard navigability and proper focus management across all interactive elements allows users without a mouse to effectively interact with the page. Furthermore, providing descriptive alt text for images, maintaining sufficient color contrast between text and backgrounds, and creating accessible forms with clear <label> elements are critical. Finally, offering transcripts or captions for all multimedia content significantly broadens reach, making the web usable for everyone by following established WCAG guidelines. More details: https://bbs.pku.edu.cn/v2/jump-to.php?url=https://epi-us.com/