Bootstrap is a popular front-end framework that provides a set of CSS and JavaScript components for building responsive, mobile-first websites. One of the goals of Bootstrap is to make it easy to create accessible websites that can be used by people with disabilities.
Bootstrap includes several accessibility-related features, including:
- ARIA (Accessible Rich Internet Applications) roles and attributes, which help screen readers and other assistive technologies understand the structure and purpose of elements on the page.
- Semantic HTML, which makes it easy to create clear and meaningful markup that can be understood by both users and assistive technologies.
- Keyboard-navigable components, which allow users to interact with the website using only a keyboard, making it easier for people with motor disabilities to use the website.
- Contrast ratios, which ensure that the text and background colors used in Bootstrap's components have sufficient contrast to be readable by people with visual impairments.
To use Bootstrap's accessibility features in your website, you can start by using the framework's pre-built components, such as buttons, forms, and navigation menus. These components have been designed with accessibility in mind and should work well out of the box.
Additionally, you can use Bootstrap's provided class such as 'sr-only', 'sr-only-focusable' to hide elements and make them accessible for screen readers only, for example : <a class="sr-only sr-only-focusable" href="#content">Skip to main content</a>
You should also pay attention to the contrast ratios used in your website and ensure that they meet the minimum recommended contrast ratios.
Also as best practice, you should test your website using various assistive technologies, such as screen readers, and make any necessary adjustments to improve accessibility.