File: grid-aspect-ratio-align-items-center.html

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<!DOCTYPE html>
<html>
<head>
<link rel="author" title="Sammy Gill" href="mailto:sammy.gill@apple.com">
<link rel="help" href="https://www.w3.org/TR/2021/WD-css-sizing-4-20210520/#aspect-ratio-automatic">
<meta name="assert" content="Grid has a definite block size computed using the inline size/aspect ratio and item is aligned accordingly (centered vertically).">
<link rel="match" href="../../reference/ref-filled-green-100px-square.xht" />
<style>
.grid {
  display: grid;
  aspect-ratio: 1/1;
  align-items: center;
  position: relative;
}
.item {
  width: 100px;
  height: 50px;
  background-color: green;
}
.abspos {
  position: absolute;
  width: 100px;
  height: 25px;
  background-color: green;
  align-self: start;
  z-index: -1;
}
</style>
</head>
<body>
<p>Test passes if there is a filled green square and <strong>no red</strong>.</p>
<div style="width: 100px">
  <div class="grid">
      <div class="abspos"></div>
      <div class="abspos" style="top: 75px;"></div>

      <div class="item"></div>
  </div>
</div>
</body>
</html>