HTML Code

<!DOCTYPE html>

<html lang=en>

<head>

  <meta charset=UTF-8>

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

  <title>YouTube iframe 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}iframe{display:block;width:100%;max-width:560px;aspect-ratio:16/9;border:none;border-radius:8px}</style>

</head>

<body>

  <h1>Embedded YouTube Video</h1>

  <iframe width=560 height=315 src=https://www.youtube.com/embed/dQw4w9WgXcQ title="YouTube video player" loading=lazy allow="accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture; web-share" allowfullscreen></iframe>

</body>

</html>

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HTML iframe Tag — YouTube Video Embed