<!DOCTYPE html>
<!--
Any copyright is dedicated to the Public Domain.
http://creativecommons.org/publicdomain/zero/1.0/
-->
<html>
<head>
<title>
CSS Reference
</title>
<style>
div {
border: 1px solid black;
width: 50px;
height: 20px;
justify-content: center;
}
</style>
</head>
<body>
<div style="display: flex;">a</div>
<div style="display: flex;">b</div>
<div style="display: flex;">c</div>
<br>
<div style="display: inline-flex;">d</div>
<div style="display: inline-flex;">e</div>
<div style="display: inline-flex;">f</div>
</body>
</html>