css/css-pseudo/marker-variable.html

<!DOCTYPE html>
<html lang="en">
<head>
  <meta charset="UTF-8" />
  <link rel="author" title="Karl Dubost" href="https://github.com/karlcow" />
  <link rel="help" href="https://drafts.csswg.org/css-pseudo/#marker-pseudo" />
  <link rel="help" href="https://drafts.csswg.org/css-variables/#defining-variables" />
  <link rel="match" href="marker-variable-ref.html">
  <title>::marker with variables</title>
  <style>
    .firstTest::marker {
      --alpha: 0.75;
      color: rgb(255 119 0 / var(--alpha));
    }

    .secondTest::marker {
      --color: rgb(255 119 0);
      color: var(--color);
    }
  </style>
</head>

<body>
  <ul>
    <li class="firstTest">Item 1</li>
    <li class="secondTest">Item 2</li>
  </ul>
</body>

</html>