Blitz - WPT: flex-align-baseline-multicol-001.html

wpt / css / css-flexbox / alignment / flex-align-baseline-multicol-001.html

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

Subtest	Status	Message
.target > * 1	PASS
.target > * 2	PASS
.target > * 3	FAIL	assert_equals: data-offset-y expected 100 got 210
.target > * 4	PASS
.target > * 5	PASS
.target > * 6	PASS
.target > * 7	FAIL	assert_equals: data-offset-y expected 140 got 250
.target > * 8	PASS
.target > * 9	PASS
.target > * 10	PASS
.target > * 11	FAIL	assert_equals: data-offset-y expected 140 got 250
.target > * 12	PASS

Enable JavaScript in test iframe

/css/css-flexbox/alignment/flex-align-baseline-multicol-001.html

<!DOCTYPE html>
<link rel="help" href="https://github.com/w3c/csswg-drafts/issues/7639">
<style>
.target {
  display: flex;
  inline-size: 100px;
  position: relative;
  line-height: 0;
  padding: 10px;
}
.target > div {
  background: hotpink;
  font-size: 20px;
}
.multicol {
  columns: 3;
  column-fill: auto;
  padding: 10px;
  border: solid 10px;
}
.multicol > div {
  break-inside: avoid;
  break-before: column;
  break-after: column;
}
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 > *')">

<!-- Three columns, largest in the middle. -->
<div class="target" style="align-items: first baseline;">
  <div data-offset-y="20"><span></span></div>
  <div class="multicol" data-offset-y="10">
    <div style="font-size: 10px;">
      <span></span><br><span></span><br><span></span>
    </div>
    <div style="font-size: 30px;">
      <span></span><br><span></span><br><span></span>
    </div>
    <div style="font-size: 20px;">
      <span></span><br><span></span><br><span></span>
    </div>
  </div>
</div>

<div class="target" style="align-items: last baseline;">
  <div data-offset-y="100"><span></span></div>
  <div class="multicol" data-offset-y="10">
    <div style="font-size: 10px;">
      <span></span><br><span></span><br><span></span>
    </div>
    <div style="font-size: 30px;">
      <span></span><br><span></span><br><span></span>
    </div>
    <div style="font-size: 20px;">
      <span></span><br><span></span><br><span></span>
    </div>
  </div>
</div>

<!-- Start spanning element. -->
<div class="target" style="align-items: first baseline;">
  <div data-offset-y="30"><span></span></div>
  <div class="multicol" data-offset-y="10">
    <div style="column-span: all; background: orange;">
      <span></span><br><span></span>
    </div>
    <div style="font-size: 10px;">
      <span></span><br><span></span><br><span></span>
    </div>
    <div style="font-size: 30px;">
      <span></span><br><span></span><br><span></span>
    </div>
    <div style="font-size: 20px;">
      <span></span><br><span></span><br><span></span>
    </div>
  </div>
</div>

<div class="target" style="align-items: last baseline;">
  <div data-offset-y="140"><span></span></div>
  <div class="multicol" data-offset-y="10">
    <div style="column-span: all; background: orange;">
      <span></span><br><span></span>
    </div>
    <div style="font-size: 10px;">
      <span></span><br><span></span><br><span></span>
    </div>
    <div style="font-size: 30px;">
      <span></span><br><span></span><br><span></span>
    </div>
    <div style="font-size: 20px;">
      <span></span><br><span></span><br><span></span>
    </div>
  </div>
</div>

<!-- End spanning element. -->
<div class="target" style="align-items: first baseline;">
  <div data-offset-y="20"><span></span></div>
  <div class="multicol" data-offset-y="10">
    <div style="font-size: 10px;">
      <span></span><br><span></span><br><span></span>
    </div>
    <div style="font-size: 30px;">
      <span></span><br><span></span><br><span></span>
    </div>
    <div style="font-size: 20px;">
      <span></span><br><span></span><br><span></span>
    </div>
    <div style="column-span: all; background: orange;">
      <span></span><br><span></span>
    </div>
  </div>
</div>

<div class="target" style="align-items: last baseline;">
  <div data-offset-y="140"><span></span></div>
  <div class="multicol" data-offset-y="10">
    <div style="font-size: 10px;">
      <span></span><br><span></span><br><span></span>
    </div>
    <div style="font-size: 30px;">
      <span></span><br><span></span><br><span></span>
    </div>
    <div style="font-size: 20px;">
      <span></span><br><span></span><br><span></span>
    </div>
    <div style="column-span: all; background: orange;">
      <span></span><br><span></span>
    </div>
  </div>
</div>