Try it Editor: Transparency using RGBA

Edit This Code :

<!DOCTYPE html>
<html>
<head>
<style>
div {
    background: rgb(76, 175, 80);
    padding: 10px;
}

div.first {
    background: rgba(76, 175, 80, 0.1);
}

div.second {
    background: rgba(76, 175, 80, 0.3);
}

div.third {
    background: rgba(76, 175, 80, 0.6);
}
</style>
</head>
<body>

<h1>Transparent Box</h1>
<p>With opacity:</p>
<div style="opacity:0.1;"><p>10% opacity</p></div>
<div style="opacity:0.3;"><p>30% opacity</p></div>
<div style="opacity:0.6;"><p>60% opacity</p></div>
<div><p>opacity 1</p></div>

<p>With RGBA color values:</p>
<div class="first"><p>10% opacity</p></div>
<div class="second"><p>30% opacity</p></div>
<div class="third"><p>60% opacity</p></div>
<div><p>default</p></div>

<p>Notice how the text gets transparent as well as the background color when using the opacity property.</p>

</body>
</html>
Result :