<!DOCTYPE html>
<html>
<head>
  <title>Reference: max-height block fragmentation</title>
  <link rel="author" title="Mats Palmgren" href="mailto:mats@mozilla.com">
  <style>
html,body {
    color:black; background-color:white; font:24px/1 monospace; padding:0; margin:0;
    width: 300px;
}
.columns {
  columns: 3;
  background: grey;
  margin-bottom: 1em;
}
.columns > div {
  height: 128px;
  background: yellow;
  border: solid;
  border-width:10px 0 6px 0;
  padding: 5px 0 3px 0;
}
.columns > div > div { height:200px; width:50px; border:solid; }
  </style>
</head>
<body>
<div class="columns">
  BEFORE
  <div>
    <div></div>
  </div>
  AFTER
</div>
<div class="columns" style="height:100px">
  BEFORE
  <div>
    <div></div>
  </div>
  AFTER
</div>
<div class="columns" style="height:70px">
  BEFORE
  <div>
    <div></div>
  </div>
  AFTER
</div>
<div class="columns" style="height:50px">
  BEFORE
  <div>
    <div></div>
  </div>
  AFTER
</div>
</body>
</html>