Blitz - WPT: table-quirks.html

wpt / css / css-tables / tentative / table-quirks.html

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

Subtest	Status	Message
table 1	FAIL	assert_equals: data-expected-height expected 116 got 156 assert_equals: data-expected-height expected 100 got 140
table 2	PASS
table 3	FAIL	assert_equals: data-expected-width expected 580 got 50
table 4	PASS
table 5	PASS
table 6	FAIL	assert_equals: data-expected-width expected 290 got 184

Enable JavaScript in test iframe

/css/css-tables/tentative/table-quirks.html

<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN">
<title>Table quirks</title>
<script src='/resources/testharness.js'></script>
<script src='/resources/testharnessreport.js'></script>
<script src="/resources/check-layout-th.js"></script>
<meta name="flags" content="ahem">
<link rel="stylesheet" type="text/css" href="/fonts/ahem.css" />
<link rel="stylesheet" type="text/css" href="./support/table-tentative.css" />
<link rel="author" title="Aleks Totic" href="atotic@chromium.org" />
<link rel="help" href="https://quirks.spec.whatwg.org/#the-table-cell-width-calculation-quirk" />
<style>
 table {
    table-layout: auto;
    border-spacing: 8px 8px;
  }
  td {
    padding: 20px;
    background: #BFB;
    font-size: 10px;
    box-sizing: border-box;
  }
  td > div {
    display: inline-block;
    background: rgba(56,162,56,0.3);
  }
</style>

<h1>Tables in quirks mode proposals</h1>

<p><a href="https://quirks.spec.whatwg.org/#the-table-cell-height-box-sizing-quirk">The table cell height box sizing quirk</a></p>
<table data-expected-height=116>
  <tr>
    <td style="height:100px;box-sizing:content-box" data-expected-height=100>100 height</td>
  </tr>
</table>
<table data-expected-height=116>
  <tr>
    <td style="height:100px;box-sizing:border-box" data-expected-height=100>100 height</td>
  </tr>
</table>

<p><a href="https://quirks.spec.whatwg.org/#the-table-cell-nowrap-minimum-width-calculation-quirk">The table cell nowrap minimum width calculation quirk</a></p>
<p class="error">Chrome Legacy, Edge, Safari fail, only FF gets it correct.<b>Proposal: deprecate the quirk</b></p>
<table>
  <tr>
    <td nowrap style="width:50px;font: 20px/1 Ahem" data-expected-width=580>nowrap nowrap nowrap nowrap</td>
  </tr>
</table>

<p><a href="https://quirks.spec.whatwg.org/#the-text-decoration-doesnt-propagate-into-tables-quirk">The text decoration doesn’t propagate into tables quirk</a></p>
<div style="font-style:italic">
  <table>
    <td id="notitalic">decoration</td>
  </table>
</div>

<p><a href="https://quirks.spec.whatwg.org/#the-collapsing-table-quirk">The collapsing table quirk</a></p>
<p class="error">Chrome Legacy/Edge/Safari ignore the quirk, FF does not. <b>Proposal: deprecate the quirk</b></p>
<table style="border: 20px solid green" data-expected-height=40 data-expected-width=40></table>

<p><a href="https://quirks.spec.whatwg.org/#the-table-cell-width-calculation-quirk">The table cell width calculation quirk</a></p>
<table style="width:200px">
  <td data-expected-width=290><img style="width:50px;height:20px"><img style="width:50px;height:20px"><img style="width:50px;height:20px"><img style="width:50px;height:20px"><img style="width:50px;height:20px"></td>
</table>

<script>
  let pngSrc="data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAMgAAACWAQMAAAChElVaAAAABGdBTUEAALGPC/xhBQAAACBjSFJNAAB6JgAAgIQAAPoAAACA6AAAdTAAAOpgAAA6mAAAF3CculE8AAAABlBMVEUAgAD///8UPy9PAAAAAWJLR0QB/wIt3gAAAAd0SU1FB+MBDwkdA1Cz/EMAAAAbSURBVEjH7cGBAAAAAMOg+VPf4ARVAQAAAM8ADzwAAeM8wQsAAAAldEVYdGRhdGU6Y3JlYXRlADIwMTktMDEtMTVUMTc6Mjk6MDMtMDg6MDCYDy9IAAAAJXRFWHRkYXRlOm1vZGlmeQAyMDE5LTAxLTE1VDE3OjI5OjAzLTA4OjAw6VKX9AAAAABJRU5ErkJggg=="
;
  for (let img of Array.from(document.querySelectorAll("img"))) {
    img.src = pngSrc;
  }
  test(_ => {
    assert_equals(window.getComputedStyle(document.querySelector("#notitalic")).fontStyle, "normal");
  }, "decoration does not propagate into table");
  document.fonts.ready.then(() => checkLayout("table"));
</script>