I'm trying to import a `.css` file using the `css` format option in a RStudio project.

The following works:
```
---
format:
  html:
    css: styles.css
---
```
or
```
---
format:
  html:
    css: some_dir/styles.css
---
```
However, importing the `.css` file from a parent directory does not seem to work:
```
---
format:
  html:
    css: ../styles.css
---
```
Currently using Quarto v. 0.9.440 in RStudio v. 4.2.0.
2022-05-25T07:15:07Z
arnaudgallou
closed
Importing `.css` from parent directory not working
https://github.com/quarto-dev/quarto-cli/issues/969