# Custom CSS for advanced styling

If the built-in options are not quite enough, add your own CSS under **Language & advanced → Custom CSS** in the customiser.

## How it works

- Your CSS applies **only inside the widget**. It cannot change anything else on your page, and your website's styles cannot accidentally break the widget.
- Changes show in the live preview. Click **Save & publish** to apply them.

## Example

```css
.rw-card { border-radius: 4px; }
```

## Tips

- Try the built-in options first. They cover colours, fonts, corners, spacing and sizes, and they keep working when we improve the layouts.
- Keep rules short and specific.
- If something looks wrong after adding CSS, clear the box and save to return to the standard design.

Source: https://docs.reviewpine.com/widgets/custom-css