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Test Info: Warnings

<!DOCTYPE html>
<style>
body {
margin: 0;
}
.container {
writing-mode: vertical-lr;
direction: ltr;
display: inline-block;
position: relative;
margin: 20px;
border: solid 4px;
width: 40px;
height: 40px;
}
.item {
writing-mode: vertical-lr;
direction: ltr;
position: absolute;
background: green;
inset: 0;
}
.item::before {
width: 20px;
height: 20px;
content: '';
display: block;
}
.rtl {
direction: rtl;
}
</style>
<script src="/resources/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script>
<script src="/resources/check-layout-th.js"></script>
<body onload="checkLayout('.item')">
<div class="container">
<div class="item" style="align-self: start;" data-expected-width="20" data-offset-x="0"></div>
</div>
<div class="container">
<div class="item" style="align-self: center;" data-expected-width="20" data-offset-x="10"></div>
</div>
<div class="container">
<div class="item" style="align-self: end;" data-expected-width="20" data-offset-x="20"></div>
</div>
<div class="container">
<div class="item" style="align-self: baseline;" data-expected-width="20" data-offset-x="0"></div>
</div>
<div class="container">
<div class="item" style="align-self: last baseline;" data-expected-width="20" data-offset-x="20"></div>
</div>
<div class="container">
<div class="item" style="align-self: self-start;" data-expected-width="20" data-offset-x="0"></div>
</div>
<div class="container">
<div class="item" style="align-self: self-end;" data-expected-width="20" data-offset-x="20"></div>
</div>
<div class="container">
<div class="item" style="align-self: stretch;" data-expected-width="40" data-offset-x="0"></div>
</div>
<!-- RTL -->
<br>
<div class="container">
<div class="item rtl" style="align-self: start;" data-expected-width="20" data-offset-x="0"></div>
</div>
<div class="container">
<div class="item rtl" style="align-self: center;" data-expected-width="20" data-offset-x="10"></div>
</div>
<div class="container">
<div class="item rtl" style="align-self: end;" data-expected-width="20" data-offset-x="20"></div>
</div>
<div class="container">
<div class="item rtl" style="align-self: baseline;" data-expected-width="20" data-offset-x="0"></div>
</div>
<div class="container">
<div class="item rtl" style="align-self: last baseline;" data-expected-width="20" data-offset-x="20"></div>
</div>
<div class="container">
<div class="item rtl" style="align-self: self-start;" data-expected-width="20" data-offset-x="0"></div>
</div>
<div class="container">
<div class="item rtl" style="align-self: self-end;" data-expected-width="20" data-offset-x="20"></div>
</div>
<div class="container">
<div class="item rtl" style="align-self: stretch;" data-expected-width="40" data-offset-x="0"></div>
</div>