<!DOCTYPE html>
<title>flexbox | flex: auto</title>
<link rel="author" href="http://opera.com" title="Opera Software">
<style>
div {
background: blue;
margin: 1em 0;
border: 1px solid black;
height: 8em;
width: 32em;
}
span {
background: white;
margin: 1em;
width: 6em;
height: 6em;
display: inline-block;
}
</style>
<div>
<span>one</span><span>two</span><span>three</span><span>four</span>
</div>
<div>
<span>one</span><span>two</span><span>three</span><span>four</span>
</div>