<!DOCTYPE html>
<html><head><title>flexbox | nested flexcontainer</title>
<link href="http://opera.com" rel="author" title="Opera Software">
<link href="http://www.w3.org/TR/css-flexbox-1/#flex-containers" rel="help">
<link href="reference/flexbox_generated-flex-ref.htm" rel="match">
<style>
div {
	background: #3366cc;
	border: 1px solid black;
	display: flex;
}
p {
	background: yellow;
	margin: 1em;
	width: 200px;
	height: 2em;
	display: flex;
}
</style>

</head><body><div>
	<p>xxx</p>
</div>
</body></html>