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<!DOCTYPE html>
<html lang=en>
<head>
  <meta charset=UTF-8>
  <meta name=viewport content="width=device-width,initial-scale=1">
  <title>Open Graph content Example</title>
  <meta property=og:title content="HTML content Attribute Tutorial">
  <meta property=og:description content="Learn how the content attribute sets metadata values on meta tags.">
  <meta property=og:type content=article>
  <style>body{font-family:system-ui,sans-serif;margin:0;padding:1.5rem;background:#f8fafc;color:#334155;line-height:1.7}h1{margin:0 0 1rem;font-size:1.25rem;color:#0f172a}.hint{margin-top:1rem;font-size:.8125rem;color:#64748b;max-width:480px}</style>
</head>
<body>
  <h1>Open Graph metadata</h1>
  <p><code>property="og:description"</code> with a <code>content</code> value helps platforms show a summary when this page is shared.</p>
  <p class=hint>Open Graph and Twitter Card tags rely on the <code>content</code> attribute for their values.</p>
</body>
</html>

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HTML content Attribute — Open Graph Property