<!DOCTYPE html>
<html><head><title>flexbox | multicol</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_columns-ref.htm" rel="match">
<style>
ul {
	background: black;
	padding: 0;
	margin: 0;

	display: flex;
	justify-content: space-around;
	columns: 3;
	column-rule: 1em solid red;
}
</style>

</head><body><ul>
	<li>one two three four</li>
	<li>damer</li>
	<li>damer</li>
	<li>damer</li>
	<li>damer</li>
</ul>
</body></html>