Code: HTML Tag <div>

<!DOCTYPE html>
<html>
<head>
<title>HTML div Tag</title>

<style>
#main {
  width: 100px;
  height: 100px;
  background: #f1f1f1;
}
</style>

</head>
<body>

<div id="main">
Example
</div>

</body>
</html>