Javascript create element Div

<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Javascript create element Div</title>
    <style>

    .tube {
      position: absolute;
      top: 10px;
      left: 10px;
      background-color: red;
      text-decoration: none;
      text-align: center;
      color: snow;
      font-family: arial black;
      padding: 5px 20px;
    }

     .div {
        border: 5px solid red;
        display: inline-block;
        position: absolute;
        top: 100px;
        padding: 50px;
    }


</style>
</head>
<body>

  <a class='tube' href='https://www.youtube.com/watch?v=1eKDwXPO15Q' target='_blank'>See it on YouTube</a>


  <script>

    div = document.createElement('div');
    document.body.appendChild(div);
    div.innerHTML = 'Javascript create element div';
    div.className = 'div';


</script>
</body>
</html>