Run Example

Edit This Code:

<!DOCTYPE html>
<html>
<head>
<style> 
div {
  width: 200px;
  height: 100px;
  padding: 20px;
  background-color: red;
  box-sizing: content-box;
}
</style>
</head>
<body>
<h2>Example of box-sizing property:</h2>
<div>A div element with content-box value</div>

</body>
</html>

Result: