<!DOCTYPE html>
<html lang="en-US">
<head>
<style>
p:nth-child(2){
font-weight: 400;
}
p:nth-child(3){
font-weight: bold;
}
</style>
</head>
<body>
<h1>CSS font-weight Property</h1>
<p>This is a paragraph with font-weight 400.</p>
<p>This is a paragraph with font-weight bold.</p>
</body>
</html>