Use the CSS :nth-child(n) selector to style every <p> element that is the second child of its parent with CSS. You can try to run the following code to implement the :nth-child(n) selector
Example
<!DOCTYPE html>
<html>
<head>
<style>
p:nth-child(4) {
background: orange;
color: white;
}
</style>
</head>
<body>
<p>This is demo text 1.</p>
<p>This is demo text 2.</p>
<p>This is demo text 3.</p>
<p>This is demo text 4.</p>
<p>This is demo text 5.</p>
<p>This is demo text 6.</p>
</body>
</html>