HTML Code

<!DOCTYPE html>
<html lang="en">
<head>
  <meta charset="UTF-8">
  <title>Superscript Three (³) in HTML</title>
  <style>
    #point::after {
      content: "\00B3";
    }
  </style>
</head>
<body>
  <p>Superscript Three using Hex Code: &#x00B3;</p>
  <p>Superscript Three using HTML Code: &#179;</p>
  <p>Superscript Three using Named Entity: &sup3;</p>
  <p id="point">Superscript Three using CSS Entity: </p>
  <p>Semantic alternative: x<sup>3</sup></p>
</body>
</html>

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HTML Entity for Superscript Three (³)