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line-breaking-019.html
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<!DOCTYPE html>
<meta charset=utf-8>
<title>CSS Text — out-of-flow element adjacent to a potential line-break</title>
<meta name=assert content="The anchor of an out-of-flow should not migrate across a soft line break">
<!-- NOTE: I'm not sure the spec explicitly addresses this exact point, but it seems like a clear
bug in Firefox, hence this test (which passes as expected in Chrome and Safari). -->
<link rel=help href="https://www.w3.org/TR/css-text-3/#line-break-details">
<link rel=match href="reference/line-breaking-019-ref.html">
<link rel=author title="Jonathan Kew" href="[email protected]">
<style>
.outer { float: left; padding: 0 1em; margin: 1em; border: 1px solid silver; }
.outer div { font-family: monospace; line-height: 2; margin: 1em 0; border: 1px dotted silver; }
.test20 div { width: 20ch; }
.test27 div { width: 27ch; }
.test30 div { width: 30ch; }
b { color: blue; border-left: 2px solid red; border-right: 2px solid green; }
/* adjust for the width of the target element's border */
div > .before { margin-left: 2px; }
div > .after { margin-left: -2px; }
.test::before,
.test::after,
.before,
.after { position: absolute; font-size: 0.5em; }
.test::before { content: "before"; }
.test::after { content: "after"; }
.before,
.test::before { color: red; font-weight: normal; }
.after,
.test::after { color: green; font-weight: normal; }
</style>
<div>Test passes if all the examples in each group render the same:</div>
<div class="outer test30">
<!-- Using ::before and ::after to insert abs-pos elements with non-empty content: -->
<div>
Preceding text <b class=test>target element</b> following text.
</div>
<!-- With explicit spans just inside the target element: -->
<div>
Preceding text <b><span class=before>before</span>target element<span class=after>after</span></b> following text.
</div>
<!-- With explicit spans just outside the target element: -->
<div>
Preceding text <span class=before>before</span><b>target element</b><span class=after>after</span> following text.
</div>
<!-- With explicit line breaks: -->
<div>
Preceding text <span class=before>before</span><b>target element</b><span class=after>after</span><br>following text.
</div>
</div>
<div class="outer test27">
<div>
Preceding text <b class=test>target element</b> following text.
</div>
<div>
Preceding text <b><span class=before>before</span>target element<span class=after>after</span></b> following text.
</div>
<div>
Preceding text <span class=before>before</span><b>target element</b><span class=after>after</span> following text.
</div>
<div>
Preceding text <span class=before>before</span><b>target<br>element</b><span class=after>after</span> following text.
</div>
</div>
<div class="outer test20">
<div>
Preceding text <b class=test>target element</b> following text.
</div>
<div>
Preceding text <b><span class=before>before</span>target element<span class=after>after</span></b> following text.
</div>
<div>
Preceding text <span class=before>before</span><b>target element</b><span class=after>after</span> following text.
</div>
<div>
Preceding text<br><span class=before>before</span><b>target element</b><span class=after>after</span><br>following text.
</div>
</div>