<!DOCTYPE html>
<html>
<head>
<link href="resources/flexbox.css" rel="stylesheet">
<style>
    .scroll { overflow: scroll; }
    .abspos { position: absolute; background-color: pink; }
    .flexbox { background-color: lightgray; padding: 1px; }
    .small { height: 3px; }
</style>
</head><body>
Test for empty buttons, which inherit from RenderFlexibleBox.  Empty
&lt;input&gt; buttons should not collapse, which makes them different from most
flex boxes. Empty &lt;button&gt;s should collapse. Note <a
href="ht