<!DOCTYPE html>
<title>flexbox | flex: 1 N</title>
<link rel="author" href="http://opera.com" title="Opera Software">
<link rel="help" href="http://www.w3.org/TR/css-flexbox-1/#flex-property">
<link rel="match" href="flexbox_flex-1-N-0-ref.html">
<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: 1 2;
}
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>
<div>
<span>one</span>
<span>two</span>
<span>three</span>
<span>four</span>
</div>