How do I make an element accessible in HTML?
The HTML lang Attribute
Here's a quick win for writing more accessible HTML — every page on your website should include the lang (language) attribute placed inside the opening <html> tag. This identifies the primary language of the page to the browser, search engines, translation software, and screen readers.
What is Wcag in HTML?
This is the HTML Techniques for Web Content Accessibility Guidelines 2.0 (WCAG 2.0). The guidelines provide a generic description of the requirements for a Web site that is accessible to people with disabilities.