css/css-grid/layout-algorithm/grid-template-flexible-rerun-track-sizing.html

<!DOCTYPE html>
<link rel="help" href="https://bugs.chromium.org/p/chromium/issues/detail?id=1149627">
<link rel="match" href="../../reference/ref-filled-green-100px-square.xht">
<meta name="fuzzy" content="maxDifference=0-1; totalPixels=0-4309" />
<style>
.grid {
  display: inline-grid;
  position: relative;
  grid-template-columns: minmax(0, .5fr);
  grid-template-rows: minmax(0, .5fr);
}
.item {
  width: 200px;
  height: 200px;
  background: linear-gradient(green, green) no-repeat;
  background-size: 100px 100px;
}
.abspos {
  grid-area: 1 / 1 / 2 / 2;
  position: absolute;
  width: 200%;
  height: 200%;
  background: red;
  z-index: -1;
}
</style>
<p>Test passes if there is a filled green square and <strong>no red</strong>.</p>
<div class="grid">
  <span class="item"></span>
  <span class="abspos"></span>
</div>