chromium/third_party/blink/web_tests/external/wpt/css/css-grid/subgrid/subgrid-baseline-012.html

<!DOCTYPE html>
<meta charset="utf-8">
<title>CSS Grid Test: Baseline-aligned subgridded item</title>
<link rel="author" title="Ethan Jimenez" href="mailto:[email protected]">
<link rel="help" href="https://drafts.csswg.org/css-grid-2/#subgrid-box-alignment">
<link rel="match" href="../../reference/ref-filled-green-100px-square.xht">
<style>
.grid {
  display: inline-grid;
  background: red;
}
.subgrid {
  display: grid;
  grid-template-rows: subgrid;
  writing-mode: vertical-rl;
}
.item {
  align-self: baseline;
  background: green;
  height: 100px;
  width: 100px;
}
</style>
<p>Test passes if there is a filled green square and <strong>no red</strong>.</p>
<div class="grid">
  <div class="subgrid">
    <div class="item"></div>
  </div>
</div>