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<!DOCTYPE html>
<html>
<head>
<link rel="author" title="Sammy Gill" href="mailto:sammy.gill@apple.com">
<link rel="help" href="https://drafts.csswg.org/css-box-4/#margin-trim-block">
<meta name="assert" content="all of the self-collapsing children at the bottom of the block should be positioned at the bottom of the block">
<style>
.trim {
margin-trim: block;
}
container {
display: block;
}
item {
display: block;
inline-size: 50px;
block-size: 50px;
background-color: green;
}
.collapsed {
block-size: 0px;
}
</style>
<script src="/resources/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script>
<script src="/resources/check-layout-th.js"></script>
</head>
<body onload="checkLayout('.collapsed')">
<div id="target">
<container class="trim">
<container>
<item></item>
<item data-offset-y="58" class="collapsed" style="margin-block: 10px 20px;">
<item data-offset-y="58" class="collapsed" style="margin-block: -40px 50px;"></item>
<item data-offset-y="58" class="collapsed" style="margin-block: 35px 5px;">
<item data-offset-y="58" class="collapsed" style="margin-block: 300px 100px"></item>
</item>
</item>
</container>
<item data-offset-y="58" class="collapsed" style="margin-block: 40px 23px;"></item>
<item data-offset-y="58" class="collapsed" style="margin-block: 100px 200px">
<item data-offset-y="58" class="collapsed" style="margin-block: -100px -200px;"></item>
</item>
</container>
</div>
</body>
</html>
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