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Test Info:
- This WPT test may be referenced by the following Test IDs:
- /css/css-box/margin-trim/block-container-style-change-triggers-layout-block-end.html - WPT Dashboard Interop Dashboard
<!DOCTYPE html>
<html>
<head>
<title>margin-trim: block-container dynamic block-end</title>
<link rel="match" href="/css/reference/ref-filled-green-100px-square-only.html">
<meta name="assert" content="Setting margin-trim: block-end after layout trims the last child's block-end margin.">
<style>
.container {
background-color: green;
width: min-content;
}
.outer {
background-color: green;
width: 100px;
height: 50px;
}
.child {
margin-bottom: 50px;
width: 100px;
height: 50px;
}
</style>
</head>
<body>
<p>Test passes if there is a filled green square.</p>
<div class="container">
<div class="child"></div>
</div>
<div class="outer"></div>
</body>
<script>
// Force an initial layout with margin-trim:none, then turn it on. The child's
// block-end margin must be trimmed in response for the two green boxes to form
// a filled 100x100 square.
document.body.offsetHeight;
document.querySelector(".container").style["margin-trim"] = "block-end";
</script>
</html>