<!DOCTYPE html>
<html>
<head>
<style>
.mask1 { width: 600px;
height: 400px;
background: green;
border: 20px solid red;
padding: 50px;
-webkit-mask-image: url(w3logo.png);
mask-image: url(w3logo.png);
-webkit-mask-size: 80%;
mask-size: 80%;
-webkit-mask-repeat: no-repeat;
mask-repeat: no-repeat;
-webkit-mask-origin: border-box;
mask-origin: border-box;
}
.mask2 { width: 600px;
height: 400px;
background: green;
border: 20px solid red;
padding: 50px;
-webkit-mask-image: url(w3logo.png);
mask-image: url(w3logo.png);
-webkit-mask-size: 80%;
mask-size: 80%;
-webkit-mask-repeat: no-repeat;
mask-repeat: no-repeat;
-webkit-mask-origin: content-box;
mask-origin: content-box;
}
</style>
</head>
<body>
<h1>The mask-origin Property</h1>
<h3>Set mask-origin: border-box:</h3>
<div class="mask1">
<img src="img_5terre.jpg" alt="Cinque Terre" width="600" height="400">
</div>
<h3>Set mask-origin: content-box:</h3>
<div class="mask2">
<img src="img_5terre.jpg" alt="Cinque Terre" width="600" height="400">
</div>
<h3>Original image:</h3>
<img src="img_5terre.jpg" alt="Cinque Terre" width="600" height="400">