<!DOCTYPE html>
<meta charset="utf-8">
<title>Writing mode</title>
<link rel="author" title="Florian Rivoal" href="https://florian.rivoal.net/">
<link rel="help" href="https://www.w3.org/TR/css-writing-modes-3/#orthogonal-flows">
<link rel="match" href="../reference/ref-filled-green-100px-square.xht">
<meta name="assert" content="In the face of multiple levels of orthogonal flow nesting, children's sizes propagate up to parents.">
<style>
body > div {
background: green;
writing-mode: vertical-lr;
}
div > div { writing-mode: horizontal-tb; }
div > div > div {
writing-mode: vertical-rl;
height: 100px;
font-size: 100px;
line-height: 1;
}
</style>
<p>Test passes if there is a filled green square and <strong>no red</strong>.</p>
<div>
<div><div> </div></div>
</div>
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