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<html><body><h1>The Element Object</h1><h2>The querySelectorAll() Method</h2><p>Set the background color of the first element (in "myDIV") with class="example":</p><div id="myDIV" style="border:1px solid black"> <h2 class="example">A Heading</h2> <p class="example">A paragraph.</p> </div><script>const element = document.getElementById("myDIV");const list = element.querySelectorAll(".example");list[0].style.backgroundColor = "red";</script></body></html>