<!DOCTYPE html>
<html>
<head>
<title>margin-trim: flex-column-orthogonal-item</title>
<link rel="author" href="mailto:sammy.gill@apple.com">
<link rel="help" href="https://drafts.csswg.org/css-box-4/#margin-trim-flex">
<link rel="match" href="/css/reference/ref-filled-green-100px-square-only.html">
<meta name="assert" content="orthogonal items have correct margins trimmed according to the flexbox's writing mode">
<style>
flexbox {
    display: flex;
    flex-direction: column;
    margin-trim: block;
}
item {
    display: block;
    background-color: green;
    width: 100px;
    height: 50px;
}
.orthogonal {
    writing-mode: vertical-rl;
}
item:first-child {
    margin-inline-start: 10px;
}
item:last-child {
    margin-block-end: 10px;
}
</style>
</head>
<body>
<p>Test passes if there is a filled green square.</p>
<flexbox>
<item class="orthogonal"></item>
<item></item>
</flexbox>
</body>
</html>
