<!DOCTYPE html>
<meta charset="utf-8">
<title>CSS Multi-column Reference: Test an unbreakble block element in a zero height multi-column container</title>
<link rel="author" title="Ting-Yu Lin" href="mailto:tlin@mozilla.com">
<link rel="author" title="Mozilla" href="https://www.mozilla.org/">
<link rel="stylesheet" href="/fonts/ahem.css">

<style>
.child {
  font: 100px/1 Ahem;
  color: green;
  inline-size: 100px;
  outline: 3px solid green;
}
</style>

<p>There shouldn't be a green strip in the second column.</p>
<div class="child">X</div>
