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<html>
<head>
<meta charset="utf-8">
<meta http-equiv="X-UA-Compatible" content="IE=edge,chrome=1">
<title>CSS Opacity For Background Experiment</title>
<meta name="description" content="">
<style>
h1 {
text-align: center;
}
div {
width: 50%;
margin: 0 auto;
background-color: #f1c40f;
padding: 10px;
}
.opacity25 {
opacity: 0.25;
}
.opacity50 {
opacity: 0.5;
}
.opacity75 {
opacity: 0.75;
}
</style>
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</head>
<body>
<center>
<h1>CSS OPACITY FOR BACKGROUND</h1>
<div class="opacity25">
<p>opacity 25%</p>
</div>
<div class="opacity50">
<p>opacity 50%</p>
</div>
<div class="opacity75">
<p>opacity 75%</p>
</div>
<div>
<p>opacity 100%</p>
</div>
</center>
</body>
</html>