<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<title>CSS Grid Layout Test: Grid with a subgridded axis and an auto repeater as line name list</title>
<link rel="help" href="https://drafts.csswg.org/css-grid-2">
<style>
  .grid {
    display: grid;
  }
  .subgrid {
    grid-template-columns: subgrid repeat(auto-fill, [x]);
  }
</style>
</head>
<body>
  <div class="grid">
    <div class="grid subgrid">
      <div style="grid-column: x"></div>
    </div>
  </div>
</body>
</html>
