THE TRANSPARENT BACKGROUND
Run 
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="utf-8">
<title>HTML</title>
<style>
	div {
	background: rgba(142,152,223,0.3);
	height: 200px;
	width: 50%;
	}
	
</style>
</head>
<body>
    <div class="container">
	  <h2> The transparent background </h2>
	  <p> Here we have added a transparent background using rgba </p>
	 </div>
	
</body>
</html>