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<!DOCTYPE html>
<link rel="help" href="https://drafts.csswg.org/css-align-3/#align-abspos">
<link rel="help" href="https://drafts.csswg.org/css-align-3/#justify-abspos">
<style>
body {
margin: 0;
}
.container {
writing-mode: horizontal-tb;
display: inline-block;
position: relative;
margin: 20px;
border: solid 4px;
width: 60px;
height: 60px;
}
.item {
writing-mode: horizontal-tb;
position: absolute;
background: green;
inset: 5px 10px 5px 10px;
}
.child::before {
aspect-ratio: 1/1;
min-width: 20px;
min-height: 20px;
width: 100%;
height: 100%;
content: '';
display: block;
}
.ar {
aspect-ratio: 1/1;
min-width: 20px;
min-height: 20px;
}
</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')">
<body>
<div class="container">
<div class="item child" style="justify-self: start; align-self: start;" data-expected-width="20" data-expected-height="20"></div>
</div>
<div class="container">
<div class="item child" style="justify-self: stretch; align-self: start;" data-expected-width="40" data-expected-height="40"></div>
</div>
<div class="container">
<div class="item child" style="justify-self: start; align-self: stretch;" data-expected-width="50" data-expected-height="50"></div>
</div>
<div class="container">
<div class="item child" style="justify-self: stretch; align-self: stretch;" data-expected-width="40" data-expected-height="50"></div>
</div>
<br>
<div class="container">
<div class="item ar" style="justify-self: start; align-self: start;" data-expected-width="20" data-expected-height="20"></div>
</div>
<div class="container">
<div class="item ar" style="justify-self: stretch; align-self: start;" data-expected-width="40" data-expected-height="40"></div>
</div>
<div class="container">
<div class="item ar" style="justify-self: start; align-self: stretch;" data-expected-width="50" data-expected-height="50"></div>
</div>
<div class="container">
<div class="item ar" style="justify-self: stretch; align-self: stretch;" data-expected-width="40" data-expected-height="50"></div>
</div>
<br>
<div class="container">
<canvas width="10" height="10" class="item" style="justify-self: start; align-self: start;" data-expected-width="10" data-expected-height="10"></canvas>
</div>
<div class="container">
<canvas width="10" height="10" class="item" style="justify-self: stretch; align-self: start;" data-expected-width="40" data-expected-height="40"></canvas>
</div>
<div class="container">
<canvas width="10" height="10" class="item" style="justify-self: start; align-self: stretch;" data-expected-width="50" data-expected-height="50"></canvas>
</div>
<div class="container">
<canvas width="10" height="10" class="item" style="justify-self: stretch; align-self: stretch;" data-expected-width="40" data-expected-height="50"></canvas>
</div>
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