<!DOCTYPE html>
<title>flexbox | flex formatting context :: negative margins and
	border box</title>
<link rel="author" href="http://opera.com" title="Opera Software">
<link rel="help" href="http://www.w3.org/TR/css-flexbox-1/#flex-containers">
<link rel="match" href="flexbox_flex-formatting-interop-ref.html">
<style>
* {margin: 0;}
.float {
	background: lightblue;
	width: 200px;
	float: left;
}
#flex {
	background: #ffcc00;
	margin-left: -200px;
	width: 200px;

	display: flex;
	display: -ms-flex;
	display: -webkit-flex;
}
div div {
	border: 2px solid transparent;
	margin: 0 2em 2em;
	flex: none;
}
p {
	clear: both;
	margin: 2em 0;
}
</style>

<div class="float">float</div>

<div id="flex">
	<div>xxx xxx xxx xxx xxx xxx xxx xxx xxx xxx xxx</div>
</div>