x
<html><body><h1>The Element Object</h1><h2>The querySelectorAll() Method</h2><p>Add a background color to the first p element in "myDIV":</p><div id="myDIV" style="border:1px solid black"> <p>This is a p element.</p> <p>This is a p element.</p></div><script>const element = document.getElementById("myDIV");const list = element.querySelectorAll("p");list[0].style.backgroundColor = "red";</script></body></html>