Can Quarto render a descending ordered (markdown) list into revealjs?

Question

Can Quarto produce a descending ordered (markdown) list rendered into revealjs?

I found this: Descending ordered lists in pandoc markdown and tried adding a bunch of different CSS bits like this:

---
title: "blah"
format:
    revealjs:
      theme: [default]
---

## test

```{r}
```

```{css}
.rev-lists > ol > li {
  counter-increment:item -1;
}

```

::: {.rev-lists}
2. This is numbered 2
1. This is numbered 1
:::

but I still ended up with a slide showing

2. This is numbered 2
3. This is numbered 1

The only workaround I could figure out was to display the content as:

2: This is numbered 2
1: This is numbered 1

and that looks like a bunch of colons.

Answer 1

You could use some HMTL syntax with ol reversed to reverse the order of the markdown list like this:

---
title: "blah"
format:
    revealjs:
      theme: [default]
---

## test

<ol reversed>
  <li>This is numbered 1</li>
  <li>This is numbered 2</li>
</ol>

Output: