<!DOCTYPE html>
<html>
<style>
a[target] {
background-color: yellow;
}
</style>
<body>
<h1>The Document Object</h1>
<h2>The querySelector() Method</h2>
<p>The CSS selector a[target] makes sure that all links with a target attribute gets a yellow background:</p>
<p>Add a red border to the first link with a target attribute:</p>
<a href="https://www.w3schools.com">w3schools.com</a>
<a href="http://www.disney.com" target="_blank">disney.com</a>
<a href="http://www.wikipedia.org" target="_top">wikipedia.org</a>
<script>
document.querySelector("a[target]").style.border = "10px solid red";
</script>
</body>
</html>