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<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<title>Test case for text-decoration with subelements</title>
<meta name="assert" content="for underlines and overlines the UA must use a single thickness and position on each line for the decorations deriving from a single decorating box">
<link rel="author" title="Jonathan Kew" href="mailto:jkew@mozilla.com">
<link rel="author" title="Mozilla" href="https://www.mozilla.org">
<link rel="help" href="https://drafts.csswg.org/css-text-decor-3/#text-underline-position-property">
<link rel="match" href="reference/text-decoration-subelements-002-ref.html">
<style>
div.wrapper {
font-size: 2em;
position: relative;
}
div.test {
text-decoration: underline;
position: absolute;
white-space: nowrap;
}
</style>
</head>
<body>
<p>Test passes if there is a single uniform underline for all the text in each line,
<i>not</i> a separate underline for the superscripts:
</p>
<div class=wrapper>
<div style="position: absolute; top: 1em;">
<div class=test>Einstein said that <i>e = mc<sup>2</sup></i>.</div>
</div>
<div style="position: absolute; top: 3em;">
<div class=test>Is <i>a<sup>n</sup> + b<sup>n</sup> = c<sup>n</sup></i> ever true for <i>n</i> > 2.</div>
</div>
</div>
</body>
</html>
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