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<!DOCTYPE html>
<meta charset="utf-8">
<title>CSS Values and Units Test: support for the ch unit</title>
<link rel="author" title="Jonathan Kew" href="mailto:jkew@mozilla.com">
<link rel="help" href="https://drafts.csswg.org/css-values-4/#ch">
<link rel="match" href="reference/ch-unit-016-ref.html">
<meta name="assert" content="The ch unit = the used advance measure of the “0” (ZERO, U+0030) glyph in the font used to render it">
<style>
@font-face {
font-family: NoDigits;
src: local(Ahem), url("/fonts/Ahem.ttf");
unicode-range: U+0000-002F, U+003A-007F;
}
@font-face {
font-family: ChTestZeroWidthZero;
src: url("resources/ChTestZeroWidthZero.woff");
}
div {
height: 10px;
background-color: blue;
margin-top: 10px;
}
.test {
width: calc(100px + 5ch);
}
.ref {
width: 100px;
}
</style>
<p>The test passes if there are two blue rectangles of equal length.</p>
<!-- NoDigits excludes the ASCII digits, and therefore should NOT be used
to derive the size of the 'ch' unit, which should instead be based on the
'0' in ChTestZeroWidthZero, which is zero-width. -->
<div class="test" style="font: 80px NoDigits, ChTestZeroWidthZero;"></div>
<div class="ref"></div>
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