Result Size: 625 x 664
x
 
<!DOCTYPE html>
<html>
<head>
<style> 
#myDIV {
  width: 300px;
  height: 300px;
  background-color: coral;
  color: white;
}
</style>
</head>
<body>
<h1>HTML Style Object</h1>
<h2>The backgroundColor Property</h2>
<p>Click the "Try it" button to set the backgroundColor property of the DIV element to "lightblue":</p>
<button onclick="myFunction()">Try it</button>
<div id="myDIV">
  <h1>Hello</h1>
</div>
<script>
function myFunction() {
  document.getElementById("myDIV").style.backgroundColor = "lightblue";
}
</script>
</body>
</html>