HTML Code

<!DOCTYPE html>

<html lang=en>

<head>

  <meta charset=UTF-8>

  <meta name=viewport content="width=device-width,initial-scale=1">

  <title>Deprecated spacer Tag</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 .75rem;font-size:1.25rem;color:#0f172a}.warning{padding:.75rem 1rem;background:#fef2f2;border:1px solid #fecaca;border-radius:8px;color:#991b1b;font-size:.875rem;max-width:420px;margin-bottom:1rem}.row{display:flex;align-items:center;gap:.5rem;max-width:420px;font-size:.9375rem}.hint{margin-top:1rem;font-size:.8125rem;color:#64748b;max-width:420px}</style>

</head>

<body>

  <h1>Deprecated &lt;spacer&gt; syntax</h1>

  <p class=warning>The &lt;spacer&gt; tag is deprecated. Modern browsers ignore it. Use CSS margin, padding, or gap instead.</p>

  <div class=row>

    <span>Left content</span>

    <spacer type=horizontal width=20 height=20></spacer>

    <span>Right content</span>

  </div>

  <p class=hint>This shows historical markup only. Spacing will not appear in modern browsers.</p>

</body>

</html>

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HTML spacer Tag — Historical Syntax (Deprecated)