CSS Opacity

It is used to specify the opacity/transparency of an element.

See this example:

<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="utf-8">
<title>Example of CSS Opactiy</title>
<style>
    .transparent {  
	   opacity: 0.5;   
       filter: alpha(opacity=50); /* For IE8 and earlier */    
	}        
</style> 
</head>
<body>  
	  <p>Normal Image</p>  
	  <p><img src="https://nexladder.com/images/spituk_gustor.jpg" alt="nexladder" /></p>  
	  <p>Transparent Image</p>  
	  <p><img class="transparent" src="https://nexladder.com/images/spituk_gustor.jpg" alt="nexladder" /></p>  
 </body>
</html>

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