<!DOCTYPE html>
<title>
  Single-line column flex fragmentation intrinsic block size.
</title>
<link rel="help" href="https://drafts.csswg.org/css-flexbox-1/#pagination">
<link rel="match" href="../../reference/ref-filled-green-100px-square.xht">
<style>
  .multicol {
    background: red;
    column-count: 4;
    column-fill: auto;
    column-gap: 0px;
    height: 100px;
    width: 100px;
  }
  .flex {
    display: flex;
    flex-direction: column;
    width: 25px;
    background: green;
  }
  .flex > div {
    width: 25px;
  }
</style>
<p>Test passes if there is a filled green square and <strong>no red</strong>.</p>
<div class="multicol">
  <div class="flex">
    <div style="height: 50px;"></div>
    <div style="height: 350px;"></div>
  </div>
</div>
