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<html>
<head>
<meta charset="utf-8">
<title>CSS Intrinsic & Extrinsic Sizing: getComputedStyle().boxSizing</title>
<link rel="help" href="https://drafts.csswg.org/css-sizing-3/#propdef-box-sizing">
<meta name="assert" content="box-sizing computed value is as specified.">
<script src="../../../resources/testharness.js"></script>
<script src="../../../resources/testharnessreport.js"></script>
<script src="../../support/computed-testcommon.js"></script>
</head>
<body>
<div id="target"></div>
<s