Blitz - WPT: flexbox-justify-content-wmvert-002.html

wpt / css / css-flexbox / flexbox-justify-content-wmvert-002.html

Data from commit:
708eb61 WPT runner: support mismatch reftests and multiple rel=match links (#665) (2026-08-09)

Subtest	Status	Message
.flexitem 1	PASS
.flexitem 2	PASS
.flexitem 3	FAIL	assert_equals: data-offset-x expected 50 got 0
.flexitem 4	FAIL	assert_equals: data-offset-x expected 50 got 0

Enable JavaScript in test iframe

/css/css-flexbox/flexbox-justify-content-wmvert-002.html

<!doctype html>
<link rel="author" title="David Grogan" href="mailto:dgrogan@chromium.org">
<link rel="help" href="https://drafts.csswg.org/css-flexbox/#justify-content-property" />
<link rel="help" href="https://drafts.csswg.org/css-align-3/#positional-values" />
<meta name="assert" content="Flexbox honors physical justify-content values when column flexboxes have main size in the physical left <-> right axis.">

<style>
.flexbox {
  display: flex;
  flex-direction: column;
  width: 100px;
  background: orange;
  border: 1px solid;
  margin-bottom: 20px;
  position: relative;
}

.flexitem {
  width: 50px;
  height: 50px;
  background: blue;
}
</style>
<script src="/resources/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script>
<script src="/resources/check-layout-th.js"></script>
<body onload="checkLayout('.flexitem')">

Both should be Blue to the left of Orange.
<div class=flexbox style="justify-content: left; writing-mode: vertical-rl;">
  <div class=flexitem data-offset-x=0></div>
</div>
<div class=flexbox style="justify-content: left; writing-mode: vertical-lr;">
  <div class=flexitem data-offset-x=0></div>
</div>

Both should be Orange to the left of Blue.
<div class=flexbox style="justify-content: right; writing-mode: vertical-rl;">
  <div class=flexitem data-offset-x=50></div>
</div>
<div class=flexbox style="justify-content: right; writing-mode: vertical-lr;">
  <div class=flexitem data-offset-x=50></div>
</div>