Ensuring web accessibility is crucial for making websites usable for everyone, including people with disabilities. Here are some standard accessibility practices and features:

Use Semantic HTML: Properly use HTML tags to convey the structure of the content. This helps screen readers understand and navigate the content more effectively1.
Provide Sufficient Contrast: Ensure there is enough contrast between text and background colors to make the content readable for people with visual impairments1.
Keyboard Accessibility: Make sure all functionality is accessible via keyboard, as some users may not be able to use a mouse1.
Alt Text for Images: Provide descriptive alt text for images so that screen readers can convey the information to users who are visually impaired1.
ARIA Roles: Use Accessible Rich Internet Applications (ARIA) roles to enhance the accessibility of web content and applications2.
Clear Navigation: Provide clear and consistent navigation options to help users easily find their way around the website3.
Form Labels: Ensure that form elements have clearly associated labels to make them accessible for screen readers3.
Feedback Mechanisms: Provide easily identifiable feedback for user actions, such as form submissions3.
Headings and Spacing: Use headings and spacing to group related content, making it easier to read and navigate3.
Responsive Design: Create designs that work well on different viewport sizes to accommodate various devices3.
For more detailed guidelines, you can refer to the Web Content Accessibility Guidelines (WCAG) and the ADA guidelines.