---
url: /api/plugins/postcss/theme-custom-media/src/variables/themeCustomMedia.md
---
[pantoken-root](../../../../../index.md) / [plugins/postcss/theme-custom-media/src](../index.md) / themeCustomMedia

# Variable: themeCustomMedia

> `const` **themeCustomMedia**: {(`options?`): [`Plugin`](https://postcss.org/api/#plugin); `postcss`: `true`; }

Beta

Create the theme custom-media lowering plugin.

Supports authoring with either direct theme custom-idents in media features (for example,
`(theme: canvas)`) or built-in `@custom-media --theme-*` aliases.

## Type Declaration

## Parameters

### options?

[`ThemeCustomMediaOptions`](../interfaces/ThemeCustomMediaOptions.md)

[ThemeCustomMediaOptions](../interfaces/ThemeCustomMediaOptions.md).

## Returns

[`Plugin`](https://postcss.org/api/#plugin)

A PostCSS [Plugin](https://postcss.org/api/#plugin).

### postcss

> **postcss**: `true`

Required PostCSS plugin marker.