<!DOCTYPE html>
<meta charset="utf-8">
<title>CSS Grid Layout Test: Margin auto and replaced grid item</title>
<link rel="author" title="Hyunjune Kim" href="mailto:hyunjune.kim@samsung.com">
<link rel="help" href="https://www.w3.org/TR/css-grid-1/#alignment">
<meta name="assert" content="Checks width of the nested grid container applied 'margin:auto' with a replaced item which has a property called max-height.">
<link rel="match" href="grid-auto-margin-and-replaced-item-001-ref.html">
<style>
  #reference-overlapped-red {
    position: absolute;
    background-color: red;
    width: 100px;
    height: 100px;
    left:0;
    right:0;
    margin: auto;
    z-index: -1;
  }
  .grid {
    display: grid;
  }
  .nested-grid {
    display: grid;
    margin: auto;
  }
  img {
    max-height: 100%;
  }
</style>

<body onload="loadImage()">

<p>Test passes if there is a filled green square and <strong>no red</strong>.</p>

<div class="grid">
  <div id="reference-overlapped-red"></div>
  <div class="nested-grid">
    <img id="replaced">
  </div>
</div>

<script>
function loadImage() {
  // Use svg for a 100x100 green square so we don't have to wait for replaced.onload.
  replaced.src = "data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 100 100' width='100' height='100'%3E%3Crect width='100%25' height='100%25' fill='green'/%3E%3C/svg%3E";
}
</script>
