> ## 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
```

## Functions

| Function | Description |
| - | - |
| `invoke` | Creates the variables with CSS strings for the spacing unit, font size unit, and corner radius. |

### invoke

```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.