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<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<style>
.reference {
display: grid;
grid-template-rows: auto;
width: min-content;
padding: 10px;
border: 5px solid gray;
background: gray;
}
</style>
</head>
<body>
<p>Test passes if there is a 30px gray square below.</p>
<div class="reference"></div>
</body>
</html>