Blitz - WPT: align-content-block-008.html

wpt / css / css-align / blocks / align-content-block-008.html

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

Subtest	Status	Message
.test 1	FAIL	assert_equals: data-offset-y expected 5 got 0 assert_equals: data-offset-y expected 15 got 40 assert_equals: data-offset-y expected 15 got 0
.test 2	FAIL	assert_equals: data-offset-y expected 15 got 0 assert_equals: data-offset-y expected 25 got 40 assert_equals: data-offset-y expected 25 got 0
.test 3	FAIL	assert_equals: data-offset-y expected 25 got 0 assert_equals: data-offset-y expected 35 got 0 assert_equals: data-offset-y expected 35 got 0
.test 4	FAIL	assert_equals: data-offset-y expected 5 got 0 assert_equals: data-offset-y expected 15 got 40 assert_equals: data-offset-y expected 15 got 0
.test 5	FAIL	assert_equals: data-offset-y expected 25 got 0 assert_equals: data-offset-y expected 35 got 0 assert_equals: data-offset-y expected 35 got 0
.test 6	FAIL	assert_equals: data-offset-y expected 5 got 0 assert_equals: data-offset-y expected 15 got 0 assert_equals: data-offset-y expected 15 got 0
.test 7	FAIL	assert_equals: data-offset-y expected 25 got 0 assert_equals: data-offset-y expected 35 got 0 assert_equals: data-offset-y expected 35 got 0
.test 8	FAIL	assert_equals: data-offset-y expected 5 got 0 assert_equals: data-offset-y expected 15 got 40 assert_equals: data-offset-y expected 15 got 0
.test 9	FAIL	assert_equals: data-offset-y expected 15 got 0 assert_equals: data-offset-y expected 25 got 0 assert_equals: data-offset-y expected 25 got 0
.test 10	FAIL	assert_equals: data-offset-y expected 25 got 0 assert_equals: data-offset-y expected 35 got 40 assert_equals: data-offset-y expected 35 got 0
.test 11	FAIL	assert_equals: data-offset-y expected 5 got 0 assert_equals: data-offset-y expected 15 got 40 assert_equals: data-offset-y expected 15 got 0
.test 12	FAIL	assert_equals: data-offset-y expected 15 got 0 assert_equals: data-offset-y expected 25 got 0 assert_equals: data-offset-y expected 25 got 0
.test 13	FAIL	assert_equals: data-offset-y expected 25 got 0 assert_equals: data-offset-y expected 35 got 40 assert_equals: data-offset-y expected 35 got 0
.test 14	FAIL	assert_equals: data-offset-y expected 15 got 0 assert_equals: data-offset-y expected 25 got 40 assert_equals: data-offset-y expected 25 got 0
.test 15	FAIL	assert_equals: data-offset-y expected 5 got 0 assert_equals: data-offset-y expected 15 got 20 assert_equals: data-offset-y expected 15 got 0
.test 16	FAIL	assert_equals: data-offset-y expected 15 got 0 assert_equals: data-offset-y expected 25 got 0 assert_equals: data-offset-y expected 25 got 0
.test 17	FAIL	assert_equals: data-offset-y expected 10 got 0 assert_equals: data-offset-y expected 10 got 40 assert_equals: data-offset-y expected 10 got 0

Enable JavaScript in test iframe

/css/css-align/blocks/align-content-block-008.html

<!DOCTYPE html>
<html>
<title>CSS Box Alignment: align-content style change on large block container with floats</title>
<link rel="help" href="https://www.w3.org/TR/css-align-3/#align-block">
<link rel="author" title="Elika J. Etemad" href="http://fantasai.inkedblade.net/contact">
<script src="/resources/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script>
<script src="/resources/check-layout-th.js"></script>

<style title="Needed for automation; delete to review/debug">
  @import "/fonts/ahem.css";
  html { font: 10px/1 Ahem; max-width: 800px; }
  .label { display: none; }
  #manual { display: none; }
</style>

<style id="initial">
  /* scramble test styles */
  [style$="start"        ] { align-content: end           !important; }
  [style$="center"       ] { align-content: unsafe end    !important; }
  [style$="end"          ] { align-content: start         !important; }
  [style$="baseline"     ] { align-content: unsafe end    !important; }
  [style$="last baseline"] { align-content: start         !important; }
  [style$="flex-start"   ] { align-content: normal        !important; }
  [style$="flex-end"     ] { align-content: start         !important; }
  [style$="unsafe start" ] { align-content: center        !important; }
  [style$="unsafe center"] { align-content: baseline      !important; }
  [style$="unsafe end"   ] { align-content: unsafe center !important; }
  [style$="safe start"   ] { align-content: unsafe end    !important; }
  [style$="safe center"  ] { align-content: normal        !important; }
  [style$="safe end"     ] { align-content: unsafe end    !important; }
  [style$="space-evenly" ] { align-content: end           !important; }
  [style$="space-between"] { align-content: unsafe center !important; }
  [style$="space-around" ] { align-content: start         !important; }
  [style$="normal"       ] { align-content: unsafe end    !important; }
</style>
<script>
  function doTest()
  {
    document.body.offsetHeight; // trigger layout
    document.getElementById('initial').disabled = true;
    checkLayout('.test');
  }
  window.onload = () => {
    requestAnimationFrame(() => {
      requestAnimationFrame(doTest);
    });
  };
  window.addEventListener("click", () => { document.getElementById('manual').style.display = "inline"; });
</script>

<style>
  html, body { margin: 0; padding: 0; }

  .test { height: 5em; margin: 0.5em 1em;
          /* show bounds of test box without interfering with margin-collapsing */
          background: black; padding-right: 2px; }
  /* ensure float is contained */
    .float { float: right; background: orange; height: 2em }
  /* ensure margin is contained */
    .in-flow { margin-top: 1em; background: orange }
  /* ensure relpos is ignored */
    .relpos { position: relative; top: -1.5em; }
  /* ensure abspos static position follows alignment */
    .wrapper { position: relative; }
    .abspos { position: absolute; right: 0; margin-top: -1.5em; }
  /* ensure overflow is not counted */
    .overflow { height: 0; }

  /* cram into 800x600 */
  html { max-height: 600px; columns: 3 }
  .wrapper { break-inside: avoid; border: solid 2px gray; }

  /* readability */
  .test > * { color: #8888; }
  .label { color: black; font-weight: bold; }
</style>

<!--
  Results should be same as align-content-block-004.html.
-->

<body>

<div class="wrapper">
  <div class="test" style="align-content: start" title="start">
    <div class="float" data-offset-y="5">FLT</div>
    <div class="in-flow" data-offset-y="15"></div>
    <div class="in-flow">
      <div class="float" data-offset-y="15">FLT</div>
      <span class="label">START</span>
      <span class="abspos">ABS</span>
      <span class="relpos">REL</span>
      <div class="overflow">OVERFLOW</div>
    </div>
  </div>
</div>
<div class="wrapper">
  <div class="test" style="align-content: center" title="center">
    <div class="float" data-offset-y="15">FLT</div>
    <div class="in-flow" data-offset-y="25"></div>
    <div class="in-flow">
      <div class="float" data-offset-y="25">FLT</div>
      <span class="label">CENTER</span>
      <span class="abspos">ABS</span>
      <span class="relpos">REL</span>
      <div class="overflow">OVERFLOW</div>
    </div>
  </div>
</div>
<div class="wrapper">
  <div class="test" style="align-content: end" title="end">
    <div class="float" data-offset-y="25">FLT</div>
    <div class="in-flow" data-offset-y="35"></div>
    <div class="in-flow">
      <div class="float" data-offset-y="35">FLT</div>
      <span class="label">END</span>
      <span class="abspos">ABS</span>
      <span class="relpos">REL</span>
      <div class="overflow">OVERFLOW</div>
    </div>
  </div>
</div>
<div class="wrapper">
  <div class="test" style="align-content: baseline" title="baseline">
    <div class="float" data-offset-y="5">FLT</div>
    <div class="in-flow" data-offset-y="15"></div>
    <div class="in-flow">
      <div class="float" data-offset-y="15">FLT</div>
      <span class="label">BASELINE</span>
      <span class="abspos">ABS</span>
      <span class="relpos">REL</span>
      <div class="overflow">OVERFLOW</div>
    </div>
  </div>
</div>
<div class="wrapper">
  <div class="test" style="align-content: last baseline" title="last baseline">
    <div class="float" data-offset-y="25">FLT</div>
    <div class="in-flow" data-offset-y="35"></div>
    <div class="in-flow">
      <div class="float" data-offset-y="35">FLT</div>
      <span class="label">LAST BASELINE</span>
      <span class="abspos">ABS</span>
      <span class="relpos">REL</span>
      <div class="overflow">OVERFLOW</div>
    </div>
  </div>
</div>
<div class="wrapper">
  <div class="test" style="align-content: flex-start" title="flex-start">
    <div class="float" data-offset-y="5">FLT</div>
    <div class="in-flow" data-offset-y="15"></div>
    <div class="in-flow">
      <div class="float" data-offset-y="15">FLT</div>
      <span class="label">FLEX-START</span>
      <span class="abspos">ABS</span>
      <span class="relpos">REL</span>
      <div class="overflow">OVERFLOW</div>
    </div>
  </div>
</div>
<div class="wrapper">
  <div class="test" style="align-content: flex-end" title="flex-end">
    <div class="float" data-offset-y="25">FLT</div>
    <div class="in-flow" data-offset-y="35"></div>
    <div class="in-flow">
      <div class="float" data-offset-y="35">FLT</div>
      <span class="label">FLEX-END</span>
      <span class="abspos">ABS</span>
      <span class="relpos">REL</span>
      <div class="overflow">OVERFLOW</div>
    </div>
  </div>
</div>
<div class="wrapper">
  <div class="test" style="align-content: unsafe start" title="unsafe start">
    <div class="float" data-offset-y="5">FLT</div>
    <div class="in-flow" data-offset-y="15"></div>
    <div class="in-flow">
      <div class="float" data-offset-y="15">FLT</div>
      <span class="label">UNSAFE START</span>
      <span class="abspos">ABS</span>
      <span class="relpos">REL</span>
      <div class="overflow">OVERFLOW</div>
    </div>
  </div>
</div>
<div class="wrapper">
  <div class="test" style="align-content: unsafe center" title="unsafe center">
    <div class="float" data-offset-y="15">FLT</div>
    <div class="in-flow" data-offset-y="25"></div>
    <div class="in-flow">
      <div class="float" data-offset-y="25">FLT</div>
      <span class="label">UNSAFE CENTER</span>
      <span class="abspos">ABS</span>
      <span class="relpos">REL</span>
      <div class="overflow">OVERFLOW</div>
    </div>
  </div>
</div>
<div class="wrapper">
  <div class="test" style="align-content: unsafe end" title="unsafe end">
    <div class="float" data-offset-y="25">FLT</div>
    <div class="in-flow" data-offset-y="35"></div>
    <div class="in-flow">
      <div class="float" data-offset-y="35">FLT</div>
      <span class="label">UNSAFE END</span>
      <span class="abspos">ABS</span>
      <span class="relpos">REL</span>
      <div class="overflow">OVERFLOW</div>
    </div>
  </div>
</div>
<div class="wrapper">
  <div class="test" style="align-content: safe start" title="safe start">
    <div class="float" data-offset-y="5">FLT</div>
    <div class="in-flow" data-offset-y="15"></div>
    <div class="in-flow">
      <div class="float" data-offset-y="15">FLT</div>
      <span class="label">SAFE START</span>
      <span class="abspos">ABS</span>
      <span class="relpos">REL</span>
      <div class="overflow">OVERFLOW</div>
    </div>
  </div>
</div>
<div class="wrapper">
  <div class="test" style="align-content: safe center" title="safe center">
    <div class="float" data-offset-y="15">FLT</div>
    <div class="in-flow" data-offset-y="25"></div>
    <div class="in-flow">
      <div class="float" data-offset-y="25">FLT</div>
      <span class="label">SAFE CENTER</span>
      <span class="abspos">ABS</span>
      <span class="relpos">REL</span>
      <div class="overflow">OVERFLOW</div>
    </div>
  </div>
</div>
<div class="wrapper">
  <div class="test" style="align-content: safe end" title="safe end">
    <div class="float" data-offset-y="25">FLT</div>
    <div class="in-flow" data-offset-y="35"></div>
    <div class="in-flow">
      <div class="float" data-offset-y="35">FLT</div>
      <span class="label">SAFE END</span>
      <span class="abspos">ABS</span>
      <span class="relpos">REL</span>
      <div class="overflow">OVERFLOW</div>
    </div>
  </div>
</div>
<div class="wrapper">
  <div class="test" style="align-content: space-evenly" title="space-evenly">
    <div class="float" data-offset-y="15">FLT</div>
    <div class="in-flow" data-offset-y="25"></div>
    <div class="in-flow">
      <div class="float" data-offset-y="25">FLT</div>
      <span class="label">SPACE-EVENLY</span>
      <span class="abspos">ABS</span>
      <span class="relpos">REL</span>
      <div class="overflow">OVERFLOW</div>
    </div>
  </div>
</div>
<div class="wrapper">
  <div class="test" style="align-content: space-between" title="space-between">
    <div class="float" data-offset-y="5">FLT</div>
    <div class="in-flow" data-offset-y="15"></div>
    <div class="in-flow">
      <div class="float" data-offset-y="15">FLT</div>
      <span class="label">SPACE-BETWEEN</span>
      <span class="abspos">ABS</span>
      <span class="relpos">REL</span>
      <div class="overflow">OVERFLOW</div>
    </div>
  </div>
</div>
<div class="wrapper">
  <div class="test" style="align-content: space-around" title="space-around">
    <div class="float" data-offset-y="15">FLT</div>
    <div class="in-flow" data-offset-y="25"></div>
    <div class="in-flow">
      <div class="float" data-offset-y="25">FLT</div>
      <span class="label">SPACE-AROUND</span>
      <span class="abspos">ABS</span>
      <span class="relpos">REL</span>
      <div class="overflow">OVERFLOW</div>
    </div>
  </div>
</div>
<div class="wrapper">
  <div class="test" style="align-content: normal" title="normal">
    <div class="float" data-offset-y="10">FLT</div>
    <div class="in-flow" data-offset-y="10"></div>
    <div class="in-flow">
      <div class="float" data-offset-y="10">FLT</div>
      <span class="label">NORMAL</span>
      <span class="abspos">ABS</span>
      <span class="relpos">REL</span>
      <div class="overflow">OVERFLOW</div>
    </div>
  </div>
</div>

<p>
  <button onclick="document.querySelector('style[title]').textContent = 'html { font-size: 12px; }'">Show Text</button>
</body>