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<!DOCTYPE html>
<html>
<head>
<title>CSS Test: Test for synthetic italics in vertical upright mode</title>
<meta charset="utf-8" />
<link rel="author" title="Jonathan Kew" href="mailto:jkew@mozilla.com" />
<link rel="stylesheet" type="text/css" href="/fonts/ahem.css" />
<link rel="match" href="test-synthetic-italic-3-ref.html">
<link rel="help" href="https://github.com/w3c/csswg-drafts/issues/2869#issuecomment-402034497"/>
<meta name="assert" content="Synthetic italics in vertical upright mode should skew vertically" />
<style type="text/css">
div {
/* use Ahem font which has no italic/oblique face, so that the oblique
will be synthesized with the given angle */
font: 50px/1 Ahem;
position: absolute;
}
/* test elements will use Ahem with various values of obliqueness */
.test {
writing-mode: vertical-rl;
-webkit-text-orientation: upright;
text-orientation: upright;
color: green;
}
/* check that the sheared glyphs are still correct when transforms are
also in effect */
#test3 {
font-style: oblique 25deg;
top: 150px;
left: 100px;
transform: scale(1.5) rotate(45deg) skew(30deg);
}
/* create a set of background shapes that should be entirely covered by the
appropriately sheared Ahem glyphs in the test elements */
.bg {
width: 50px;
height: 150px;
}
.inner {
/* we shrink the inner red shape slightly to try and avoid pixels
"bleeding through" around antialiased glyph edges */
margin: 2px;
width: calc(100% - 4px);
height: calc(100% - 4px);
background-color: red;
}
#bg3 {
top: 150px;
left: 100px;
/* same transform as the test element, plus skewY for the oblique */
transform: scale(1.5) rotate(45deg) skew(30deg) skewY(25deg);
}
</style>
</head>
<body>
<p>Test passes if no red shows, just a sheared green block:</p>
<div id=bg3 class=bg><div class=inner></div></div>
<div id=test3 class=test>ABC</div>
</body>
</html>
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