---
id: fast-foundation.designtokenconfiguration.csscustompropertyname
title: DesignTokenConfiguration.cssCustomPropertyName property
hide_title: true
---
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[@microsoft/fast-foundation](./fast-foundation.md) &gt; [DesignTokenConfiguration](./fast-foundation.designtokenconfiguration.md) &gt; [cssCustomPropertyName](./fast-foundation.designtokenconfiguration.csscustompropertyname.md)

## DesignTokenConfiguration.cssCustomPropertyName property

The name of the CSS custom property to associate to the , or null if not CSS custom property should be associated.

<b>Signature:</b>

```typescript
cssCustomPropertyName?: string | null;
```