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<!DOCTYPE html>
<meta charset="utf-8">
<title>CSS Values and Units Test: the ch unit in vertical orientation</title>
<link rel="author" title="Florian Rivoal" href="http://florian.rivoal.net/">
<link rel="help" href="https://drafts.csswg.org/css-values-3/#font-relative-lengths">
<link rel="help" href="https://www.w3.org/TR/css-writing-modes-3/#block-flow">
<link rel="help" href="https://www.w3.org/TR/css-writing-modes-3/#text-orientation">
<link rel="match" href="reference/ch-unit-002-ref.html">
<meta name="assert" content="In vertical upright, the ch unit is equal to the used vertical advance measure of the 0 (ZERO, U+0030) glyph found in the font used to render it.">
<style>
span {
background: green;
color: green;
left: 0; right: 0;
position: absolute;
}
div {
background: red;
color: red;
position: relative;
height: 5ch;
width: 10ch;
writing-mode: vertical-rl;
text-orientation: upright;
}
div + div {
height: auto;
}
div + div span {
height: 5ch;
}
</style>
<body>
<p>Test passes if there is a <strong>filled green square</strong> and <strong>no red</strong>.</p>
<div><span>00000</span></div>
<div><span></span>00000</div>
</body>
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