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Accordion Table of Contents Accessibility support Keyboard Key / stateFunctionTab, Shift-TabMoves focus to the next (or previous) focusable element.Enter/SpaceWhen focus is on the accordion trigger, the associated panel expands or collapses. Development considerations Heading hierarchy The accordion summary should be a heading element (e.g.,p-heading or <h1> to <h6>,) to ensure proper semantic structure and correct heading hierarchy. Common do's and don'ts Do use the summary slot with a heading element such as p-heading or native h1–h6. Do keep heading levels sequential across multiple accordions on a page. Don't use plain text in the summary without a semantic heading. Integration examples
Accordion summary without semantic heading❌ Anti-pattern
<p-accordion>
  <span slot="summary">
    Delivery options
  </span>
  <p-text>
    Content about delivery.
  </p-text>
</p-accordion>
✅ Recommended
<p-accordion>
  <p-heading slot="summary" tag="h2" size="sm">
    Delivery options
  </p-heading>
  <p-text>
    Content about delivery.
  </p-text>
</p-accordion>
Skipped heading level❌ Anti-pattern
<p-heading tag="h1">
  Configure your Porsche
</p-heading>

<p-accordion>
  <p-heading slot="summary" tag="h4" size="sm">
    Delivery options
  </p-heading>
  ...
</p-accordion>
✅ Recommended
<p-heading tag="h1">
  Configure your Porsche
</p-heading>

<p-accordion>
  <p-heading slot="summary" tag="h2" size="sm">
    Delivery options
  </p-heading>
  ...
</p-accordion>
Tests Automated TechnologySupportAXE-Core (WCAG 2.2 AA, Best-Practice)✅High-Contrast Mode (light/dark)✅Text-Zoom (200%)✅ Manual TechnologySupportKeyboard✅Screen reader (VoiceOver, NVDA)✅
Global settingsColor SchemeAll color tokens use the light-dark() CSS function. Set the theme via the CSS color-scheme property: light for light mode, dark for dark mode, or light dark to follow the user's system preference.LightDarkLight DarkDirectionThe dir global attribute in HTML changes the direction of text and other content within an element. It's most often used on the <html> tag to set the entire page's direction, which is crucial for supporting languages that are written from right to left (RTL), such as Arabic and Hebrew. For example, using <html dir="rtl"> makes the entire page display from right to left, adjusting the layout and text flow accordingly.LTR (left-to-right)RTL (right-to-left)Text ZoomTo ensure accessibility and comply with WCAG 2.2 AA standards, it is mandatory for web content to support text resizing up to at least 200% without loss of content or functionality. Using relative units like rem is a best practice for achieving this, as they allow the text to scale uniformly based on the user's browser settings.100%130%150%200%