# CSS Framework To establish a unified style language throughout Alliance Auth and Community Apps, Alliance Auth is providing its own CSS framework with a couple of CSS classes. ## Callout-Boxes These are similar to the Bootstrap alert/notification boxes, but not as "loud". Callout-boxes need a base-class (`.aa-callout`) and a modifier-class (e.g.: `.aa-callout-info` for an info-box). Modifier classes are available for the usual Bootstrap alert levels "Success", "Info", "Warning" and "Danger". ![Alliance Auth Framework: Callout Boxes](/_static/images/development/callout-boxes.jpg "Alliance Auth Framework: Callout Boxes") ### HTML ```html

This iy a success callout-box.

This iy a info callout-box.

This iy a warning callout-box.

This iy a danger callout-box.

```