a11y demos and tests

• [aria-live="polite"] and loading
• keyboard-friendly drag and drop
• Cards and focus and hover
• Button and link states
• display: contents
• WCAG 2.2 focus styles
• Screen readers and inputs, disabled and readonly
• Landmarks best practice example page
• Groups of radios, three ways
• Masked
• Accessible names and descriptions
• Error message with roles and describedbys
• Buttons and loading and disabling and focus
• Disabled attributes on various things
• Accessible data visualisation: text alternatives
• It's about time
• What the focus?
• aria-describedby flattening things
• Tables and links and things
• Complex tables
• Making table rows clickable
• More accessible headings
• Dynamic title
• Tables with things in them
• ARIA Live regions: dynamicallly changing politeness
• ARIA Live regions: multiple live regions
• ARIA Live regions: appending content
• Skipping the skip link
• Tables and colspans
• Empty cell testing
• Label in name testing for voice control