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Test Info:

<!DOCTYPE html>
<style>
.target {
display: grid;
grid-auto-flow: column;
position: relative;
line-height: 0;
font-size: 20px;
inline-size: 200px;
margin-block: 10px;
padding: 10px;
border: solid 3px;
}
.inner {
display: flex;
border: solid 5px;
padding: 10px;
}
span {
display: inline-block;
width: 1em;
height: 1em;
outline: solid cyan 3px;
outline-offset: -3px;
}
</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" style="align-items: first baseline;">
<div data-offset-y="15"><span></span></div>
<div class="inner" data-offset-y="10">
<div style="font-size: 10px;"><span></span></div>
<div style="font-size: 30px;"><span></span></div>
</div>
</div>
<div class="target" style="align-items: last baseline;">
<div data-offset-y="35"><span></span></div>
<div class="inner" data-offset-y="10">
<div style="font-size: 10px;"><span></span></div>
<div style="font-size: 30px;"><span></span></div>
</div>
</div>
<div class="target" style="align-items: first baseline;">
<div data-offset-y="35"><span></span></div>
<div class="inner" style="flex-direction: row-reverse;" data-offset-y="10">
<div style="font-size: 10px;"><span></span></div>
<div style="font-size: 30px;"><span></span></div>
</div>
</div>
<div class="target" style="align-items: last baseline;">
<div data-offset-y="15"><span></span></div>
<div class="inner" style="flex-direction: row-reverse;" data-offset-y="10">
<div style="font-size: 10px;"><span></span></div>
<div style="font-size: 30px;"><span></span></div>
</div>
</div>
<div class="target" style="align-items: first baseline;">
<div data-offset-y="15"><span></span></div>
<div class="inner" style="flex-direction: column;" data-offset-y="10">
<div style="font-size: 10px;"><span></span></div>
<div style="font-size: 30px;"><span></span></div>
</div>
</div>
<div class="target" style="align-items: last baseline;">
<div data-offset-y="45"><span></span></div>
<div class="inner" style="flex-direction: column;" data-offset-y="10">
<div style="font-size: 10px;"><span></span></div>
<div style="font-size: 30px;"><span></span></div>
</div>
</div>
<div class="target" style="align-items: first baseline;">
<div data-offset-y="35"><span></span></div>
<div class="inner" style="flex-direction: column-reverse;" data-offset-y="10">
<div style="font-size: 10px;"><span></span></div>
<div style="font-size: 30px;"><span></span></div>
</div>
</div>
<div class="target" style="align-items: last baseline;">
<div data-offset-y="45"><span></span></div>
<div class="inner" style="flex-direction: column-reverse;" data-offset-y="10">
<div style="font-size: 10px;"><span></span></div>
<div style="font-size: 30px;"><span></span></div>
</div>
</div>
<!-- flex-wrap: wrap -->
<div class="target" style="align-items: first baseline;">
<div data-offset-y="25"><span></span></div>
<div class="inner" style="flex-wrap: wrap; inline-size: 50px;" data-offset-y="10">
<div style="font-size: 20px;"><span></span></div>
<div style="font-size: 30px;"><span></span></div>
<div style="font-size: 10px;"><span></span></div>
<div style="font-size: 35px;"><span></span></div>
</div>
</div>
<div class="target" style="align-items: last baseline;">
<div data-offset-y="70"><span></span></div>
<div class="inner" style="flex-wrap: wrap; inline-size: 50px;" data-offset-y="10">
<div style="font-size: 20px;"><span></span></div>
<div style="font-size: 30px;"><span></span></div>
<div style="font-size: 10px;"><span></span></div>
<div style="font-size: 35px;"><span></span></div>
</div>
</div>
<div class="target" style="align-items: first baseline;">
<div data-offset-y="35"><span></span></div>
<div class="inner" style="flex-wrap: wrap; flex-direction: row-reverse; inline-size: 50px;" data-offset-y="10">
<div style="font-size: 20px;"><span></span></div>
<div style="font-size: 30px;"><span></span></div>
<div style="font-size: 10px;"><span></span></div>
<div style="font-size: 35px;"><span></span></div>
</div>
</div>
<div class="target" style="align-items: last baseline;">
<div data-offset-y="45"><span></span></div>
<div class="inner" style="flex-wrap: wrap; flex-direction: row-reverse; inline-size: 50px;" data-offset-y="10">
<div style="font-size: 20px;"><span></span></div>
<div style="font-size: 30px;"><span></span></div>
<div style="font-size: 10px;"><span></span></div>
<div style="font-size: 35px;"><span></span></div>
</div>
</div>
<div class="target" style="align-items: first baseline;">
<div data-offset-y="25"><span></span></div>
<div class="inner" style="flex-wrap: wrap; flex-direction: column; block-size: 50px;" data-offset-y="10">
<div style="font-size: 20px;"><span></span></div>
<div style="font-size: 30px;"><span></span></div>
<div style="font-size: 10px;"><span></span></div>
<div style="font-size: 35px;"><span></span></div>
</div>
</div>
<div class="target" style="align-items: last baseline;">
<div data-offset-y="50"><span></span></div>
<div class="inner" style="flex-wrap: wrap; flex-direction: column; block-size: 50px;" data-offset-y="10">
<div style="font-size: 20px;"><span></span></div>
<div style="font-size: 30px;"><span></span></div>
<div style="font-size: 10px;"><span></span></div>
<div style="font-size: 35px;"><span></span></div>
</div>
</div>
<div class="target" style="align-items: first baseline;">
<div data-offset-y="35"><span></span></div>
<div class="inner" style="flex-wrap: wrap; flex-direction: column-reverse; block-size: 50px;" data-offset-y="10">
<div style="font-size: 20px;"><span></span></div>
<div style="font-size: 30px;"><span></span></div>
<div style="font-size: 10px;"><span></span></div>
<div style="font-size: 35px;"><span></span></div>
</div>
</div>
<div class="target" style="align-items: last baseline;">
<div data-offset-y="55"><span></span></div>
<div class="inner" style="flex-wrap: wrap; flex-direction: column-reverse; block-size: 50px;" data-offset-y="10">
<div style="font-size: 20px;"><span></span></div>
<div style="font-size: 30px;"><span></span></div>
<div style="font-size: 10px;"><span></span></div>
<div style="font-size: 35px;"><span></span></div>
</div>
</div>
<!-- flex-wrap: wrap-reverse -->
<div class="target" style="align-items: first baseline;">
<div data-offset-y="15"><span></span></div>
<div class="inner" style="flex-wrap: wrap-reverse; inline-size: 50px;" data-offset-y="10">
<div style="font-size: 20px;"><span></span></div>
<div style="font-size: 30px;"><span></span></div>
<div style="font-size: 10px;"><span></span></div>
<div style="font-size: 35px;"><span></span></div>
</div>
</div>
<div class="target" style="align-items: last baseline;">
<div data-offset-y="70"><span></span></div>
<div class="inner" style="flex-wrap: wrap-reverse; inline-size: 50px;" data-offset-y="10">
<div style="font-size: 20px;"><span></span></div>
<div style="font-size: 30px;"><span></span></div>
<div style="font-size: 10px;"><span></span></div>
<div style="font-size: 35px;"><span></span></div>
</div>
</div>
<div class="target" style="align-items: first baseline;">
<div data-offset-y="40"><span></span></div>
<div class="inner" style="flex-wrap: wrap-reverse; flex-direction: row-reverse; inline-size: 50px;" data-offset-y="10">
<div style="font-size: 20px;"><span></span></div>
<div style="font-size: 30px;"><span></span></div>
<div style="font-size: 10px;"><span></span></div>
<div style="font-size: 35px;"><span></span></div>
</div>
</div>
<div class="target" style="align-items: last baseline;">
<div data-offset-y="60"><span></span></div>
<div class="inner" style="flex-wrap: wrap-reverse; flex-direction: row-reverse; inline-size: 50px;" data-offset-y="10">
<div style="font-size: 20px;"><span></span></div>
<div style="font-size: 30px;"><span></span></div>
<div style="font-size: 10px;"><span></span></div>
<div style="font-size: 35px;"><span></span></div>
</div>
</div>
<div class="target" style="align-items: first baseline;">
<div data-offset-y="15"><span></span></div>
<div class="inner" style="flex-wrap: wrap-reverse; flex-direction: column; block-size: 50px;" data-offset-y="10">
<div style="font-size: 20px;"><span></span></div>
<div style="font-size: 30px;"><span></span></div>
<div style="font-size: 10px;"><span></span></div>
<div style="font-size: 35px;"><span></span></div>
</div>
</div>
<div class="target" style="align-items: last baseline;">
<div data-offset-y="55"><span></span></div>
<div class="inner" style="flex-wrap: wrap-reverse; flex-direction: column; block-size: 50px;" data-offset-y="10">
<div style="font-size: 20px;"><span></span></div>
<div style="font-size: 30px;"><span></span></div>
<div style="font-size: 10px;"><span></span></div>
<div style="font-size: 35px;"><span></span></div>
</div>
</div>
<div class="target" style="align-items: first baseline;">
<div data-offset-y="45"><span></span></div>
<div class="inner" style="flex-wrap: wrap-reverse; flex-direction: column-reverse; block-size: 50px;" data-offset-y="10">
<div style="font-size: 20px;"><span></span></div>
<div style="font-size: 30px;"><span></span></div>
<div style="font-size: 10px;"><span></span></div>
<div style="font-size: 35px;"><span></span></div>
</div>
</div>
<div class="target" style="align-items: last baseline;">
<div data-offset-y="55"><span></span></div>
<div class="inner" style="flex-wrap: wrap-reverse; flex-direction: column-reverse; block-size: 50px;" data-offset-y="10">
<div style="font-size: 20px;"><span></span></div>
<div style="font-size: 30px;"><span></span></div>
<div style="font-size: 10px;"><span></span></div>
<div style="font-size: 35px;"><span></span></div>
</div>
</div>