# foldoutHeaderUssClassName

> The USS class name for the foldout header of the ListView.

## Definition

* **Type:** Field
* **Namespace:** [UnityEngine.UIElements](/engine/6000.3/script-reference/unityengine/uielements.md)
* **Assembly:** UnityEngine.UIElementsModule

```csharp
public static readonly string foldoutHeaderUssClassName
```

### Remarks

Unity adds this USS class to the foldout element in the ListView. Any styling applied to this class affects every foldout located beside, or below the stylesheet in the visual tree.