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<!DOCTYPE html>
<html>
<head>
<style>
body {
  counter-reset: section;
}
h2::before {
  counter-increment: section;
  content: "Section " counter(section, upper-roman) ": ";
}
</style>
</head>
<body>
<h1>Using CSS Counters:</h1>
<h2>HTML Tutorial</h2>
<h2>CSS Tutorial</h2>
<h2>JavaScript Tutorial</h2>
</body>
</html>