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<!DOCTYPE html>
<html>
<head>
<style>
.group {
border: solid black 1px;
padding: 20px;
margin: 10px;
width: max-content;
}
.outer {
mask-border-outset: 5px;
display: inline-block;
}
.container {
mask-border-source: url("/images/green.png");
mask-border-slice: 20;
background-color: black;
width: 50px;
height: 50px;
}
.container-zoom {
mask-border-source: url("/images/green.png");
mask-border-slice: 20;
background-color: black;
width: 100px;
height: 100px;
}
.spacer {
display: inline-block;
width: 20px;
}
</style>
</head>
<body>
<p>Each grouping below should have two matching boxes.</p>
<div class="group">
<div class="outer">
<div class="container" style="mask-border-outset: 5px;">
</div>
</div>
<div class="spacer"></div>
<div class="outer">
<div class="container" style="mask-border-outset: inherit;">
</div>
</div>
</div>
<div class="group">
<div class="outer">
<div class="container-zoom" style="mask-border-outset: 10px;">
</div>
</div>
<div class="spacer"></div>
<div class="outer">
<div class="container-zoom" style="mask-border-outset: 10px;">
</div>
</div>
</div>
</body>
</html>