<!DOCTYPE html>
<html>
<head>
<link rel="author" href="mailto:sammy.gill@apple.com">
<link rel="help" href="https://drafts.csswg.org/css-box-4/#margin-trim-block">
<meta name="assert" content="Items, including self-collapsing ones, at the block-end of the container should have their margins trimmed">
<style>
container {
    display: block;
    inline-size: min-content;
    margin-trim: block-end;
}
item {
    display: block;
    background-color: green;
    inline-size: 50px;
    block-size: 10px;
    margin-block-end: 10px;
}
.border {
    border: 1px solid black;
}
.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('item')">
    <div id="target">
        <container>
            <item data-expected-margin-bottom="10"></item>
            <item data-expected-margin-bottom="0" style="block-size: auto;">
                <div><item data-expected-margin-bottom="10"></item></div>
                <div>
                    <item data-expected-margin-bottom="0" style="block-size: auto;">
                        <div><item data-expected-margin-bottom="0"></item></div>
                    </item>
                    <item class="collapsed" data-expected-margin-bottom="0">
                        <div><item class="collapsed" data-expected-margin-bottom="0"></item></div>
                    </item>
                </div>
                <item class="collapsed" data-expected-margin-bottom="0">
                    <div><item class="collapsed" data-expected-margin-bottom="0"></item></div>
                </item>
            </item>
            <item class="collapsed" data-expected-margin-bottom="0">
                <div><item class="collapsed" data-expected-margin-bottom="0"></item></div>
            </item>
        </container>
    </div>
</body>
</html>
