<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd"> <!-- Any copyright is dedicated to the Public Domain. http://creativecommons.org/publicdomain/zero/1.0/ --><!-- In this reference case, we have inline-blocks instead of inline flex containers. We stick an Ahem whitespace character in each inline-block, with a customized line-height to make the baseline end up at the bottom of the inline-block's content-box. --><html xmlns="http://www.w3.org/1999/xhtml"><head> <title>CSS Reftest Reference</title> <link href="mailto:dholbert@mozilla.com" rel="author" title="Daniel Holbert" /> <meta charset="utf-8" /> <link href="support/ahem.css" type="text/css" rel="stylesheet" /> <style> body { font: 20px Ahem; } .flexContainer { display: inline-block; height: 16px; width: 16px; /* Each inline-block's baseline will be the baseline of the single Ahem character that it contains. We want to set up that char such that its baseline is at the bottom of the container's content box (since that's the corresponding flex container's baseline). So, we use a line-height of 20px, which gives us a baseline of 20px * 0.8 = 16px, which is the bottom of the container's content-box -- awesome. */ line-height: 20px; background: purple; border: 0px dotted black; /* (Elements that want a border will set their border-width.) */ } </style> </head> <body> A <!-- We have to include a character in the inline-blocks in order for them to baseline-align; otherwise, they align the bottom of their border-boxes. --> <div class="flexContainer"> </div> <div style="padding-bottom: 20px" class="flexContainer"> </div> <div style="padding: 10px" class="flexContainer"> </div> <div style="border-width: 3px" class="flexContainer"> </div> <div style="border-bottom-width: 4px" class="flexContainer"> </div> </body></html>