HTML Code

<!DOCTYPE html>

<html lang=en>

<head>

  <meta charset=UTF-8>

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

  <title>vspace — JavaScript 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 .75rem;font-size:1.25rem;color:#0f172a}button{margin-top:.75rem;padding:.45rem .85rem;border:1px solid #cbd5e1;border-radius:6px;background:#fff;cursor:pointer;font:inherit}.hint{font-size:.8125rem;color:#64748b;margin-top:.75rem}</style>

</head>

<body>

  <h1>Dynamic vertical spacing</h1>



  <p>Text above the image.</p>



  <img id=dynamicImage src="data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='120' height='80' viewBox='0 0 120 80'%3E%3Crect width='120' height='80' fill='%2393c5fd'/%3E%3Ctext x='60' y='45' text-anchor='middle' font-size='12' fill='%231e3a8a'%3EImage%3C/text%3E%3C/svg%3E" width=120 height=80 alt="Sample image">



  <p>Text below the image.</p>



  <button type=button onclick=setSpace(30)>30px vertical space</button>



  <script>function setSpace(e){var t=document.getElementById("dynamicImage");t.style.marginTop=e+"px",t.style.marginBottom=e+"px"}</script>



  <p class=hint>Modern replacement for changing vspace at runtime.</p>

</body>

</html>

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HTML vspace Attribute — dynamic CSS spacing