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<!DOCTYPE html>
<link rel="help" href="https://drafts.csswg.org/css-inline-3/#baseline-source">
<link rel="author" title="David Shin" href="mailto:dshin@mozilla.com">
<link rel="author" title="Mozilla" href="http://www.mozilla.org/">
<meta name="assert" content="<textarea> with baseline-source: first generates sensible baselines.">
<link rel="stylesheet" href="/fonts/ahem.css">
<style>
.target {
inline-size: 200px;
padding: 10px;
border: solid 3px;
position: relative;
line-height: 0;
font-size: 20px;
writing-mode: vertical-rl;
}
.inner {
border: solid 5px;
padding: 10px;
baseline-source: first;
font-size: 30px;
}
span {
display: inline-block;
width: 1em;
height: 1em;
outline: solid cyan 3px;
outline-offset: -3px;
}
textarea {
border: solid 5px;
width: 60px;
height: 60px;
vertical-align: baseline;
font-family: Ahem;
line-height: 1;
margin: 0;
padding: 0;
}
</style>
<script src="/resources/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script>
<script src="/resources/check-layout-th.js"></script>
<body onload="checkLayout('.target > *')">
<div class="target">
<span data-offset-x="60"></span>
<textarea data-offset-x="10" class="inner"></textarea>
</div>
<div class="target">
<span data-offset-x="60"></span>
<textarea data-offset-x="10" class="inner">X X X X X</textarea>
</div>
<div class="target">
<span data-offset-x="60"></span>
<textarea data-offset-x="10" class="inner" placeholder="X X X X X"></textarea>
</div>
<div class="target">
<span data-offset-x="25"></span>
<textarea data-offset-x="10" class="inner" style="font-size: 100px;"></textarea>
</div>
<div class="target">
<span data-offset-x="25"></span>
<textarea data-offset-x="10" class="inner" style="font-size: 100px;">X X X X X</textarea>
</div>
<div class="target">
<span data-offset-x="25"></span>
<textarea data-offset-x="10" class="inner" style="font-size: 100px;" placeholder="X X X X X"></textarea>
</div>
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