<!DOCTYPE html>
<html lang="en-US">
<head>
<style>
p::before{
counter-increment: myCounter;
content: "Paragraph " counter(myCounter) ": ";
font-weight:bold;
font-size:17px;
}
</style>
</head>
<body>
<h1>CSS counter-reset Property</h1>
<p>This is paragraph</p>
<p>This is paragraph</p>
<p>This is paragraph</p>
<button onclick="myFunction()">Click Me</button>
<script>
var x = document.getElementsByTagName("body")[0];
function myFunction(){
x.style.counterReset = "myCounter";
}
</script>
<p><strong>Note</strong>: Click on the button to add css 'counter-reset' property.</p> </body>
</html>