css/css-multicol/fixedpos-static-pos-with-viewport-cb-003.html

<!DOCTYPE html>
<title>
  Nested fixedpos in a nested multicol with viewport containing block.
</title>
<link rel="help" href="https://www.w3.org/TR/css-position-3/#abspos-breaking">
<link rel="match" href="../reference/ref-filled-green-100px-square.xht">
<style>
  .multicol {
    column-count: 2;
    column-fill: auto;
    column-gap: 0px;
  }
  #outer {
    height: 100px;
    width: 100px;
    margin-top: -100px;
    margin-left: -50px;
  }
  #inner {
    width: 50px;
    height: 100px;
  }
  .rel {
    position: relative;
  }
  .abs {
    position: absolute;
    width: 25px;
  }
  .fixed {
    position: fixed;
    width: 100px;
    height: 100px;
  }
</style>
<p>Test passes if there is a filled green square and <strong>no red</strong>.</p>
<div class="multicol" id="outer">
  <div class="multicol" id="inner">
    <div class="rel">
      <div style="height: 100px;"></div>
      <div class="abs">
        <div style="height: 200px;"></div>
        <div class="fixed" style="background: green;"></div>
      </div>
    </div>
  </div>
  <div class="fixed" style="background: red; z-index: -1; left: 8px;"></div>
</div>