x
<html><style>.myStyle { background-color: coral; padding: 16px;}.newStyle { background-color: lightblue; text-align: center; font-size: 25px; padding: 16px;}</style><body><h1>The Element Object</h1><h2>The className Property</h2><button onclick="myFunction()">Change</button><p>Click "Change" the change the class attribute of "myDIV" to "newStyle".</p><div id="myDIV" class="myStyle"><p>I am myDIV.</p></div><script>function myFunction() { document.getElementById("myDIV").className = "newStyle";}</script></body></html>