---
id: fast-foundation.cssdesigntoken.csscustomproperty
title: CSSDesignToken.cssCustomProperty property
hide_title: true
---
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[@microsoft/fast-foundation](./fast-foundation.md) &gt; [CSSDesignToken](./fast-foundation.cssdesigntoken.md) &gt; [cssCustomProperty](./fast-foundation.cssdesigntoken.csscustomproperty.md)

## CSSDesignToken.cssCustomProperty property

The  formatted as a CSS custom property if the token is configured to write a CSS custom property.

<b>Signature:</b>

```typescript
readonly cssCustomProperty: string;
```