HTML Code

<!DOCTYPE html>
<html lang=en>
<head>
  <meta charset=UTF-8>
  <meta name=viewport content="width=device-width,initial-scale=1">
  <title>HTML Optgroup Example</title>
  <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}label{display:block;margin-bottom:.35rem;font-size:.875rem;font-weight:600;color:#475569}select{width:100%;max-width:280px;padding:.5rem .65rem;border:1px solid #cbd5e1;border-radius:8px;font-size:.875rem;font-family:inherit;background:#fff;color:#0f172a}</style>
</head>
<body>
  <h1>optgroup label Attribute</h1>
  <label for=group-select>Choose an option</label>
  <select id=group-select>
    <optgroup label="Group Name">
      <option>Option 1</option>
      <option>Option 2</option>
    </optgroup>
  </select>
</body>
</html>

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HTML optgroup Tag — label Attribute