css/css-pseudo/marker-content-003.html

<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<title>CSS Test: ::marker pseudo elements styled with 'content' property and display:grid</title>
<link rel="author" title="Mats Palmgren" href="mailto:mats@mozilla.com">
<link rel="match" href="marker-content-003-ref.html">
<link rel="help" href="https://drafts.csswg.org/css-pseudo-4/#marker-pseudo">
<style>
li::marker {
  content: "X";
  display: grid;
  grid-template-columns: auto 10px;
}
li { background: grey; }
span { font-size: 32pt; }
</style>
</head>
<body>
<ol><li></li><li>B</li><li><span>C</span></li></ol>
</body>
</html>