css/css-grid/grid-items/grid-inline-items-003.html

<!DOCTYPE html>
<meta charset="utf-8">
<title>CSS Grid Layout Test: Grid items with 'display:none' are not rendered within an inline grid</title>
<link rel="author" title="Manuel Rego Casasnovas" href="mailto:rego@igalia.com">
<link rel="help" href="http://www.w3.org/TR/css-grid-1/#grid-items" title="4 Grid Items">
<link rel="match" href="../../reference/ref-filled-green-100px-square.xht">
<meta name="flags" content="ahem">
<link rel="stylesheet" type="text/css" href="/fonts/ahem.css" />
<style>
  #reference-overlapped-red {
    position: absolute;
    background-color: red;
    width: 100px;
    height: 100px;
    z-index: -1;
  }

  .test-inline-grid-overlapping-green {
    display: inline-grid;
    font: 50px/1 Ahem;
    color: green;
  }

  .display-none-red {
    display: none;
    color: red;
  }
</style>
<p>Test passes if there is a filled green square and <strong>no red</strong>.</p>

<div id="reference-overlapped-red"></div>
<div class="test-inline-grid-overlapping-green two-columns">
  <span>it</span>
  <span class="display-none-red">hidden</span>
  <span>em</span>
</div>