What is accessibility (a11y) in HTML/CSS

Accessibility (often abbreviated as a11y) in HTML/CSS refers to the practice of ensuring that web content is usable by people of all abilities and disabilities. This includes providing a seamless experience for users who rely on assistive technologies, such as screen readers or keyboard navigation.

Making your website accessible involves following best practices and guidelines, such as the Web Content Accessibility Guidelines (WCAG), to improve the usability of your web content for everyone, including those with visual, auditory, motor, and cognitive disabilities.

Some key aspects of accessibility include semantic HTML usage, appropriate alt tags for images, video captions, proper heading structure, and ensuring sufficient color contrast.

Example of Accessible HTML

<nav aria-label="Main Navigation">
    <ul>
        <li><a href="home.html">Home</a></li>
        <li><a href="about.html">About Us</a></li>
        <li><a href="contact.html">Contact</a></li>
    </ul>
</nav>