# ussClassName

> The USS class name for Foldout elements.

## Definition

* **Type:** Field
* **Namespace:** [UnityEngine.UIElements](/engine/6000.5/script-reference/unityengine/uielements.md)
* **Assembly:** UnityEngine.UIElementsModule

```csharp
public static readonly string ussClassName
```

### Remarks

Unity adds this USS class to every instance of a [Foldout](/engine/6000.5/script-reference/unityengine/uielements/foldout.md). Any styling applied to this class affects every Foldout located beside, or below the stylesheet in the visual tree.