Skip to content
New issue

Have a question about this project? Sign up for a free GitHub account to open an issue and contact its maintainers and the community.

Sign up for GitHub

By clicking “Sign up for GitHub”, you agree to our terms of service and privacy statement. We’ll occasionally send you account related emails.

Already on GitHub? Sign in to your account

Jump to bottom

Update links to CCA, MQ5 prefers-reduced-motion, evergreen WCAG urls, more resources #35427

Merged
merged 1 commit into from
Nov 30, 2021
Merged

Update links to CCA, MQ5 prefers-reduced-motion, evergreen WCAG urls, more resources #35427

Changes from all commits
Commits
Show all changes
1 commit
Select commit
File filter

Filter by extension

Filter by extension
Conversations
Failed to load comments.
Loading
Jump to
Jump to file
Failed to load files.
Loading
Diff view
Diff view
12 changes: 7 additions & 5 deletions site/content/docs/4.6/getting-started/accessibility.md
View file
Open in desktop
Original file line number Diff line number Diff line change
Expand Up @@ -10,7 +10,7 @@ Bootstrap provides an easy-to-use framework of ready-made styles, layout tools,

## Overview and Limitations

The overall accessibility of any project built with Bootstrap depends in large part on the author's markup, additional styling, and scripting they've included. However, provided that these have been implemented correctly, it should be perfectly possible to create websites and applications with Bootstrap that fulfill [<abbr title="Web Content Accessibility Guidelines">WCAG</abbr> 2.0](https://www.w3.org/TR/WCAG20/) (A/AA/AAA), [Section 508](https://www.section508.gov/) and similar accessibility standards and requirements.
The overall accessibility of any project built with Bootstrap depends in large part on the author's markup, additional styling, and scripting they've included. However, provided that these have been implemented correctly, it should be perfectly possible to create websites and applications with Bootstrap that fulfill [<abbr title="Web Content Accessibility Guidelines">WCAG</abbr> 2.1](https://www.w3.org/TR/WCAG/) (A/AA/AAA), [Section 508](https://www.section508.gov/) and similar accessibility standards and requirements.

### Structural markup

Expand All @@ -24,7 +24,7 @@ Because Bootstrap's components are purposely designed to be fairly generic, auth

### Color contrast

Most colors that currently make up Bootstrap's default palette—used throughout the framework for things such as button variations, alert variations, form validation indicators—lead to *insufficient* color contrast (below the recommended [WCAG 2.0 color contrast ratio of 4.5:1](https://www.w3.org/TR/UNDERSTANDING-WCAG20/visual-audio-contrast-contrast.html)) when used against a light background. Authors will need to manually modify/extend these default colors to ensure adequate color contrast ratios.
Most colors that currently make up Bootstrap's default palette—used throughout the framework for things such as button variations, alert variations, form validation indicators—lead to *insufficient* color contrast (below the recommended [WCAG 2.1 text color contrast ratio of 4.5:1](https://www.w3.org/TR/WCAG/#contrast-minimum)) when used against a light background. Authors will need to manually modify/extend these default colors to ensure adequate color contrast ratios.

### Visually hidden content

Expand All @@ -45,13 +45,15 @@ For visually hidden interactive controls, such as traditional "skip" links, `.sr

### Reduced motion

Bootstrap includes support for the [`prefers-reduced-motion` media feature](https://drafts.csswg.org/mediaqueries-5/#prefers-reduced-motion). In browsers/environments that allow the user to specify their preference for reduced motion, most CSS transition effects in Bootstrap (for instance, when a modal dialog is opened or closed, or the sliding animation in carousels) will be disabled, and meaningful animations (such as spinners) will be slowed down.
Bootstrap includes support for the [`prefers-reduced-motion` media feature](https://www.w3.org/TR/mediaqueries-5/#prefers-reduced-motion). In browsers/environments that allow the user to specify their preference for reduced motion, most CSS transition effects in Bootstrap (for instance, when a modal dialog is opened or closed, or the sliding animation in carousels) will be disabled, and meaningful animations (such as spinners) will be slowed down.

## Additional resources

- [Web Content Accessibility Guidelines (WCAG) 2.0](https://www.w3.org/TR/WCAG20/)
- [Web Content Accessibility Guidelines (WCAG) 2.1](https://www.w3.org/TR/WCAG/)
- [The A11Y Project](https://www.a11yproject.com/)
- [MDN accessibility documentation](https://developer.mozilla.org/en-US/docs/Web/Accessibility)
- [Tenon.io Accessibility Checker](https://tenon.io/)
- [Colour Contrast Analyser (CCA)](https://developer.paciellogroup.com/resources/contrastanalyser/)
- [Color Contrast Analyser (CCA)](https://www.tpgi.com/color-contrast-checker/)
- ["HTML Codesniffer" bookmarklet for identifying accessibility issues](https://github.com/squizlabs/HTML_CodeSniffer)
- [Microsoft Accessibility Insights](https://accessibilityinsights.io/)
- [Deque Axe testing tools](https://www.deque.com/axe/)