> For the complete documentation index, see [llms.txt](https://help.hai.abbiecod.es/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://help.hai.abbiecod.es/documentation/settings/custom-css.md).

# Custom CSS

## Variables

`--accent-color`

## Highlight User Accounts

User accounts use a u-username class. To highlight a user with the username "bob", you would use the class `.u-bob`

For example, to change a post's background color, you can use:

```
article.card.u-bob {
  background-color: purple;
}
```