Test of Superfences Custom

Our goal it to use uppercase letters to style the ordered list like this:

This is used in ordered lists within multiple-choce question responses.

Our final result is to a superfence that adds a <div> with a class in markdown.

<div class="upper-alpha">
1. Response 1
2. Response 2
3. Response 3
4. Response 4
</div>

Which renders this:

1. Response 1 2. Response 2 3. Response 3 4. Response 4

The HTML that is created by mkdocs is this:

<div class="upper-alpha">
  <ol>
    <li>Response 1</li>
    <li>Response 2</li>
    <li>Response 3</li>
    <li>Response 4</li>
  </ol>
</div>