<!DOCTYPE quirks-mode>
<link rel="help" href="https://quirks.spec.whatwg.org/#the-body-element-fills-the-html-element-quirk">
<link rel="match" href="body-fills-html-quirk-ref.html">
<style>
body {
border: solid;
margin: 10px 11px 12px 14px;
float: left;
}
span {
display: inline-block;
width: 100px;
height: 100px;
background: green;
}
</style>
<body>
<span></span>
</body>