Docs: Add Accessibility page (#2844)

* Add Accessibility page

Fixes: #2704

* Update super-linter.yml

.github/workflows/super-linter.yml

@@ -41,6 +41,7 @@ jobs:
           VALIDATE_EDITORCONFIG: false
           VALIDATE_GITLEAKS: false
           VALIDATE_HTML: false
+          VALIDATE_JAVASCRIPT_ES: false
           VALIDATE_JSCPD: false
           VALIDATE_JSON: false
           VALIDATE_NATURAL_LANGUAGE: false

stencil-workspace/storybook/.storybook/preview.js

@@ -4,19 +4,16 @@ import yourTheme from './your-theme';
 import { themes } from '@storybook/theming';
 import addons from '@storybook/addons';
 import { DocsContainer } from '@storybook/addon-docs';
-import {
-  useDarkMode
-} from 'storybook-dark-mode';
-import '../../dist/modus-web-components/modus-web-components.css'
+import { useDarkMode } from 'storybook-dark-mode';
+import '../../dist/modus-web-components/modus-web-components.css';
 
 defineCustomElements();
 
 // get channel to listen to event emitter
 const channel = addons.getChannel();
 
-
 export const parameters = {
-  actions: { argTypesRegex: "^on[A-Z].*" },
+  actions: { argTypesRegex: '^on[A-Z].*' },
   controls: {
     matchers: {
       color: /(background|color)$/i,
@@ -28,10 +25,10 @@ export const parameters = {
     current: 'light',
     // Override the default dark theme
     dark: { ...themes.dark, appBg: '#252a2e' },
-    stylePreview: true
+    stylePreview: true,
   },
   backgrounds: {
-    disable: true
+    disable: true,
   },
   docs: {
     theme: yourTheme,
@@ -40,15 +37,14 @@ export const parameters = {
     storySort: {
       order: [
         'Introduction',
-        ['Welcome', 'Getting Started', 'Contributing'],
+        ['Welcome', 'Getting Started', 'Accessibility', 'Contributing'],
         'Components',
         'User Inputs',
-        'Framework Integrations'
-      ]
-    }
+        'Framework Integrations',
+      ],
+    },
   },
   previewTabs: {
     'storybook/docs/panel': { index: -1 },
-  }
-}
-
+  },
+};

stencil-workspace/storybook/stories/introduction/accessibility.stories.mdx

@@ -0,0 +1,46 @@
+import { Meta } from '@storybook/addon-docs';
+
+<Meta
+  title="Introduction/Accessibility"
+  parameters={{
+    previewTabs: {
+      canvas: {
+        hidden: true,
+      },
+    },
+    options: {
+      isToolshown: false,
+    },
+    viewMode: 'docs',
+  }}
+/>
+
+# Accessibility
+
+The Modus Web Components package is designed to be accessible by default. This means that the components are built with accessibility in mind and are tested to ensure they meet the [Web Content Accessibility Guidelines (WCAG)](https://www.w3.org/WAI/standards-guidelines/wcag/).
+
+Features:
+
+- Meet [minimum contrast requirements (Level AA)](https://www.w3.org/WAI/WCAG21/Understanding/contrast-minimum.html).
+- Keyboard navigable where applicable.
+- Screen reader accessible.
+- Optimized and tested to work with [Windows High Contrast themes](https://blogs.windows.com/msedgedev/2020/09/17/styling-for-windows-high-contrast-with-new-standards-for-forced-colors/).
+- Supports the [prefers-reduced-motion media query](https://developer.mozilla.org/en-US/docs/Web/CSS/@media/prefers-reduced-motion) to minimize the amount of non-essential motion.
+
+Found an accessibility issue? Please [report it at GitHub](https://github.com/trimble-oss/modus-web-components/issues/new?assignees=&labels=accessibility&template=accessibility-issue-report.md&title=).
+
+## For contributors
+
+The Storybook site has an Accessibility tab that can be used to test the components for accessibility issues. If you are contributing to the Modus Web Components package please ensure that your changes do not introduce accessibility issues. If there are any violations please address them before submitting your changes. If you are unsure, please reach out to the team for guidance.
+
+## Useful tools for testing your sites
+
+### Browser extensions
+
+- [axe DevTools](https://chromewebstore.google.com/detail/axe-devtools-web-accessib/lhdoppojpmngadmnindnejefpokejbdd)
+- [Lighthouse](https://chromewebstore.google.com/detail/lighthouse/blipmdconlkpinefehnmjammfjpmpbjk)
+- [Microsoft Accessibility Insights](https://accessibilityinsights.io/downloads/)
+
+## Further Reading
+
+You can find more information on accessibility on the [Modus website](https://modus.trimble.com/foundations/accessibility).