wpt / css / css-tables / tentative / col-collapse-table-size.html

Status: PASS | Duration: 3ms | Subtests: 5/5 | Open test on wpt.live | wpt.fyi

TestTest SourceSubtests (5/5)

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

SubtestStatusMessage
main table 1PASS
main table 2PASS
main table 3PASS
main table 4PASS
main table 5PASS

/css/css-tables/tentative/col-collapse-table-size.html

<!doctype html>
<script src='/resources/testharness.js'></script>
<script src='/resources/testharnessreport.js'></script>
<script src="/resources/check-layout-th.js"></script>
<title>col visibility:collapse and minmax sizes</title>
<link rel="author" title="Aleks Totic" href="atotic@chromium.org" />
<link rel="help" href="https://www.w3.org/TR/css-tables-3/#visibility-collapse-track-rendering"/>

<style>

  main table {
    right: 0;
    display:inline-table;
    border: 1px solid black;
  }
  main col {
    visibility:collapse;
  }
  main td {
    width: 200px;
    height: 20px;
  }
  main caption {
    background: yellow;
  }
  main td:nth-child(1) {
    background: rgba(255,0,0,0.2);
  }
  main td:nth-child(2) {
    background: rgba(200,200,200,1.0);
  }
  main table:hover col {
    visibility: visible;
  }
</style>

<h1>Interactions between &lt;COL&gt; visiblity:collapse, and table inline size</h1>
<p>What happens to the table size when column collapses? Should the space taken up by the table
  remain the same, but the table iteslf should shrink?</p>
<p>Hovering over tables will turn off column collapsing</p>
<main>

<p style="position:absolute;top:200px;left:0;width: 300px">
Tables to the right are absolutely positioned</p>
<table id="abs" style="position:absolute;top:200px;right:0">
  <col>
  <td style="width:100px"></td>
  <td>absolute, right:0</td>
</table>

 <table id="abscaption" style="position:absolute; top:260px;right:0" >
  <col>
  <caption style="width:250px">caption</caption>
  <td></td>
  <td>absolute, right:0</td>
</table>

<p style="margin-top:200px">Inline tables</p>
<table id="caption">
  <col>
  <caption style="width:500px">caption</caption>
  <td></td>
  <td></td>
</table><span style="font-size:50px">after</span>
<p>

<table id="plain">
  <col>
  <td style="width:100px">td</td>
  <td></td>
</table><span style="font-size:50px">after</span>

<p>Table as a flex item</p>

<div style="display:flex;width:700px">

<table id="plain">
  <col>
  <td style="width:100px">td</td>
  <td></td>
</table>
<div style="flex-grow:1;background-color:yellow">
</div>
</main>

<script>
  checkLayout("main table");
</script>