---
title: Create a callout via the option `attr.chunk`
output:
  html:
    meta:
      css: ["@default", "@callout"]
      js: ["@callout"]
---

If you use the class name `.callout-*` on a chunk, you can turn it into a callout, e.g.,

```{r}
#| attr.chunk = '.callout-example'

1 + 1
```

Remember to load the `callout` CSS/JS assets in YAML.