<!DOCTYPE html>
<html>
<head>
<title>margin-trim: block-container-block-start-002</title>
<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">
<link rel="match" href="/css/reference/ref-filled-green-100px-square-only.html">
<meta name="assert" content="block-start should trim block start margin for ONLY block-level first child">
</head>
<body>
<p>Test passes if there is a filled green square.</p>
<div style="width:100px; height: 100px; background-color: green;"></div>
</body>
</html>
