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  <meta charset=UTF-8>
  <meta name=viewport content="width=device-width,initial-scale=1">
  <title>pre Alternative</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}pre{margin:0;padding:.75rem;background:#0f172a;color:#e2e8f0;border-radius:8px;font-size:.8125rem;line-height:1.6;max-width:360px;overflow-x:auto}.hint{margin-top:1rem;font-size:.8125rem;color:#64748b;max-width:360px}</style>
</head>
<body>
  <h1>Modern alternative: pre</h1>
  <pre>Your preformatted text here
  Spaces and line breaks are preserved.</pre>
  <p class=hint>Use &lt;pre&gt; instead of obsolete &lt;plaintext&gt; for code blocks and fixed-layout text.</p>
</body>
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HTML plaintext Alternative — pre Tag