chromium/third_party/blink/web_tests/external/wpt/css/css-tables/toggle-row-display-property-001.html

<!DOCTYPE html>
<link rel="author" title="David Grogan" href="mailto:[email protected]">
<link rel="help" href="https://www.w3.org/TR/CSS2/visuren.html#display-prop">
<link rel="help" href="https://bugs.chromium.org/p/chromium/issues/detail?id=764031">
<link rel="match" href="toggle-row-display-property-001-ref.html">
<meta name="assert" content="After setting display:table-row on tr elements with display:none, the table should look same as if display:none were never used." />

<style>
td, th {
  border: 1px solid black;
}
tr {
  display: none;
}
</style>

<table id=theTable>
  <tr>
    <th colspan="4">This cell must span all columns for repro in chrome</th>
  </tr>
  <tr>
    <td rowspan="3" style="height:200px">A</td>
  </tr>
  <tr>
    <td>1</td>
    <td>2</td>
    <td>3</td>
  </tr>
  <tr>
    <td>1</td>
    <td>2</td>
    <td>3</td>
  </tr>
</table>

<script>
theTable.offsetTop;
let rows = document.querySelectorAll('tr');
for (var i = 0; i < rows.length; i++) {
  rows[i].style.display = 'table-row';
}
</script>