<!DOCTYPE html>
<title>
  Multi-line column flex fragmentation: Tall margins with forced break and
  vertical writing-mode.
</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>
  #flex {
    display: flex;
    flex-direction: column;
    flex-wrap: wrap;
    block-size: 500px;
    position: relative;
  }
  #flex > div {
    background: green;
    inline-size: 10px;
  }
</style>
<p>Test passes if there is a filled green square and <strong>no red</strong>.</p>
<div style="writing-mode: vertical-rl;">
  <div style="inline-size: 100px; block-size: 100px; columns: 5; column-gap: 0; column-fill: auto; background: red;">
    <div id="flex">
      <div style="block-size: 50px;"></div>
      <div style="block-size: 50px; margin-right: 100px; break-before: column;"></div>
      <div style="block-size: 200px; margin-right: 50px;"></div>
      <div style="block-size: 50px; background: white;"></div>
      <div style="block-size: 50px; margin-right: 100px; break-before: column;"></div>
      <div style="block-size: 200px; margin-right: 50px;"></div>
      <div style="position: absolute; block-size: 150px; right: 50px;"></div>
      <div style="position: absolute; block-size: 200px; top: 10px;"></div>
      <div style="position: absolute; block-size: 50px; inline-size: 20px; right: 250px;"></div>
    </div>
  </div>
</div>
