negative-margin-shrinking-container-size-001.html

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This WPT test may be referenced by the following Test IDs:
- /css/CSS2/normal-flow/negative-margin-shrinking-container-size-001.html - WPT Dashboard Interop Dashboard

<!DOCTYPE html>

<title>Last block with negative in container that reduces container height</title>

<link rel="author" title="Morten Stenshorne" href="mstensho@chromium.org">

<link rel="help" href="https://www.w3.org/TR/CSS22/box.html#collapsing-margins" title="8.3.1 Collapsing margins">

<link rel="match" href="../../reference/ref-filled-green-200px-square.html">

<p>Test passes if there is a filled green square and <strong>no red</strong>.</p>

<div style="width:200px; background:red;">

  <div style="height:200px;">

    <div style="height:80px; background:green;"></div>

  </div>

  <div style="margin-top:-120px; height:20px; background:green;"></div>

</div>

<div style="width:200px; height:100px; background:green;"></div>