chromium/third_party/blink/web_tests/external/wpt/html/rendering/the-details-element/summary-display-grid.html

<!DOCTYPE html>
<meta charset="utf-8">
<title>CSS Test: summary with 'display: grid'</title>
<link rel="author" title="Xing Xu" href="mailto:[email protected]">
<link rel="match" href="summary-display-grid-ref.html">
<link rel="help" href="https://html.spec.whatwg.org/multipage/rendering.html#the-details-and-summary-elements">
<meta name="assert" content="Checks that styling a <summary> with 'display: grid' makes it a grid container.">
<style>
.grid-container {
  display: grid;
  grid-template-columns: 200px 10px 0.3fr 10px 0.7fr;
  grid-template-rows: auto 20px auto;
}

.grid-element {
  background-color: #444;
  color: #fff;
  padding: 20px;
  font-size: 2em;
}

.element-a {
  grid-column-start: 1;
  grid-column-end: ;
  grid-row-start: 1;
  grid-row-end: 2;
  background: #6F9;
}

.element-b {
  grid-column-start: 3;
  grid-column-end: 4;
  grid-row-start: 1;
  grid-row-end: 2;
  background: #69F;
}

.element-c {
  grid-column-start: 5;
  grid-column-end: 6;
  grid-row-start: 1;
  grid-row-end: 2;
  background: #F69;
}

.element-d {
  grid-column-start: 1;
  grid-column-end: 2;
  grid-row-start: 3;
  grid-row-end: 4;
  background: #9F6;
}

.element-e {
  grid-column-start: 3;
  grid-column-end: 4;
  grid-row-start: 3;
  grid-row-end: 4;
  background: #96F;
}

.element-f {
  grid-column-start: 5;
  grid-column-end: 6;
  grid-row-start: 3;
  grid-row-end: 4;
  background: #F96;
}
</style>
<summary class="grid-container">
  <div class="grid-element element-a">A</div>
  <div class="grid-element element-b">B</div>
  <div class="grid-element element-c">C</div>
  <div class="grid-element element-d">D</div>
  <div class="grid-element element-e">E</div>
  <div class="grid-element element-f">F</div>
</summary>