<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">
<html xmlns="http://www.w3.org/1999/xhtml"><head><title>flexbox | flex: 0 0 0 unitless</title>
<link href="http://opera.com" rel="author" title="Opera Software" />
<link href="http://www.w3.org/TR/css-flexbox-1/#flex-property" rel="help" />
<link href="reference/flexbox_flex-0-0-0-ref.xht" rel="match" />
<style>
div {
background: blue;
margin: 1em 0;
border: 1px solid black;
height: 8em;
width: 40em;
display: flex;
}
span {
background: white;
margin: 1em 0;
width: 5em;
display: inline-block;
flex: 0 0 0;
}
span:nth-child(1) {background: yellow;}
span:nth-child(2) {background: pink;}
span:nth-child(3) {background: lightblue;}
span:nth-child(4) {background: grey;}
</style>
</head><body><div>
<span>one</span>
<span>two</span>
<span>three</span>
<span>four</span>
</div>
</body></html>