<html>
<head></head>
<body>
  <h1>HTML tutorials:</h1>
  <h2>HTML Tutorial</h2>
  <h2>CSS Tutorial</h2>

  <h1>Scripting tutorials:</h1>
  <h2>JavaScript</h2>
  <h2>VBScript</h2>

  <h1>XML tutorials:</h1>
  <h2>XML</h2>
  <h2>XSL</h2>
  
  </body>
</html>
body {
    counter-reset: section;
}

h1 {
    counter-reset: subsection;
}

h1::before {
    counter-increment: section;
    content: "Section " counter(section) ". ";
}

h2::before {
    counter-increment: subsection;
    content: counter(section) "." counter(subsection) " ";
}
Rerun