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<!DOCTYPE html>
<meta charset="utf-8">
<title>CSS Grid Layout Reference Case</title>
<link rel="author" title="Emily McDonough" href="mailto:emcdonough@mozilla.com"/>
<style>
#holder {
height: 50px;
width: 30px;
border: 10px solid fuchsia;
}
#item {
width: 300px;
height: 50px;
background: aqua;
}
</style>
<div id="holder">
<div id="item"></div>
</div>