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<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<title>CSS Test: font-size-adjust property</title>
<link rel="help" href="https://www.w3.org/TR/css-fonts-4/#font-size-adjust-prop">
<style>
@font-face {
font-family: 'ahem-ex-500';
src: url('./resources/ahem-ex-500.otf') format('opentype');
}
@font-face {
font-family: 'ahem-ex-250';
src: url('./resources/ahem-ex-250.otf') format('opentype');
}
.wrapper {
--primary-font: 'ahem-ex-500';
--secondary-font: 'ahem-ex-250';
}
.test {
font-family: var(--primary-font), var(--secondary-font);
font-size: 50px;
color: peru;
height: 50px;
}
.primary-font {
font-family: var(--primary-font);
}
.secondary-font {
font-family: var(--secondary-font);
}
.tall-inline-block {
display: inline-block;
height: 100px;
}
.description {
font-family: 'Times New Roman';
font-size: 14px;
}
.main {
font-size: 16px;
margin-bottom: 8px;
}
</style>
</head>
<body>
<div class="description main">For this test we are using two fonts. AhemEx500 has a aspect value (xHeight/size) of 0.5 and AhemEx250 an aspect value of 0.25. On both fonts all glyphs used in the tests look like a square but AhemEx500 doesn't contain 'A' (U+0041).</div>
<div class="wrapper">
<div class="description">1. Same glyph x in different spans with different fonts. The second one is adjusted with font-size-adjust. They should have the same size for test to pass.</div>
<div class="test">
<span class="primary-font">xx</span>
</div>
</div>
<div class="wrapper">
<div class="description">
2. Different glyphs 'x' and 'A' in the same span, with 2 fonts in font-family fallback and <em>without</em> font-size-adjust. The second glyph can't be rendered by primary font so it will individually fallback to the secondary font. Note it is smaller than the first glyph.
</div>
<div class="test"><span>xA</span></div>
</div>
<div class="wrapper">
<div class="description">
3. Different glyphs 'x' and 'A' in the same span, with 2 fonts in font-family fallback and <em>with</em> font-size-adjust. The second glyph can't be rendered by primary font so it will individually fallback to the secondary font. Note that now they have the same size.
</div>
<div class="test">
<!-- We are inserting a tall inline-block here to make the position of the baseline independent of the adjusted glyph since on the ref test we don't use font-size-adjust but font-size -->
<span>xx<span class="tall-inline-block"></span></span>
</div>
</div>
</html>
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