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<!DOCTYPE html>
<html>
<head>
<style>
img {
    opacity: 0.5;
    filter: alpha(opacity=50); /* For IE8 and earlier */
}
</style>
</head>
<body>

<h1>Image Transparency</h1>
<p>The opacity property specifies the transparency of an element. The lower the value, the more transparent:</p>

<p>Image with 50% opacity:</p>
<img src="img_forest.jpg" alt="Forest" width="170" height="100">

</body>
</html>

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