> ## Documentation Index
> Fetch the complete documentation index at: https://docs.crossmint.com/llms.txt
> Use this file to discover all available pages before exploring further.

# CheckoutAppearanceVariables.Companion

> Kotlin Object

**Object**

```kotlin theme={null}
companion object
```

## Deprecated

### ~~invoke~~

> [!WARNING]
>
> Deprecated. Pass spacingUnitLength, fontSizeUnitLength, and cornerRadius as a CheckoutLength, for example CheckoutLength.px(4) or CheckoutLength.custom("4px").

```kotlin theme={null}
operator fun invoke(fontFamily: String? = null, spacingUnit: String? = null, fontSizeUnit: String? = null, borderRadius: String? = null, colors: CheckoutVariablesColorStyle? = null): CheckoutAppearanceVariables
```

Creates the variables with CSS strings for the spacing unit, font size unit, and corner radius.