# itemAlternativeBackgroundUssClassName

> The USS class name for odd rows in the BaseVerticalCollectionView.

## Definition

* **Type:** Field
* **Namespace:** [UnityEngine.UIElements](/engine/6000.6/script-reference/unityengine/uielements.md)
* **Assembly:** UnityEngine.UIElementsModule

```csharp
public static readonly string itemAlternativeBackgroundUssClassName
```

### Remarks

Unity adds this USS class to every odd-numbered item in the BaseVerticalCollectionView when the [\_showAlternatingRowBackgrounds](/engine/6000.6/script-reference/unityengine/uielements/baseverticalcollectionview/showalternatingrowbackgrounds.md) property is set to `ContentOnly` or `All`. When the `showAlternatingRowBackgrounds` property is set to either of those values, odd-numbered items are displayed with a different background color than even-numbered items. This USS class is used to differentiate odd-numbered items from even-numbered items. When the `showAlternatingRowBackgrounds` property is set to `None`, the USS class is not added, and any styling or behavior that relies on it's invalidated.