<!DOCTYPE html>
<title>flexbox | flex formatting context :: negative margins and
	border box</title>
<link rel="author" href="http://opera.com" title="Opera Software">
<style>
* {margin: 0;}
.float {
	background: lightblue;
	width: 200px;
	float: left;
}
#flex {
	background: #ffcc00;
	margin-left: -200px;
	width: 200px;
}
div div {
	border: 2px solid transparent;
	margin: 0 2em 2em;
}
p {
	clear: both;
	margin: 2em 0;
}
#nbfc {
	white-space: nowrap;
	background: #ffcc00;
	margin-left: -200px;
	width: 200px;
	table-layout: fixed;
	display: table;
}
</style>

<div class="float">float</div>
<div id="nbfc">
	<div>xxx xxx xxx xxx xxx xxx xxx xxx xxx xxx xxx</div>
</div>