HTML Code

<!DOCTYPE html>
<html lang=en>
<head>
  <meta charset=UTF-8>
  <meta name=viewport content="width=device-width,initial-scale=1">
  <title>Code Block</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:420px;overflow-x:auto}code{font-family:ui-monospace,monospace}</style>
</head>
<body>
  <h1>Code block</h1>
  <pre><code>// Your multiline code here
function exampleFunction() {
  return "Hello, World!";
}</code></pre>
</body>
</html>

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HTML pre Tag — Code Block