---
id: 5a9d726c424fe3d0e10cad11
title: Create a custom CSS Variable
challengeType: 0
videoUrl: ''
localeTitle: ''
---
## Description
undefined
## Instructions
في فئة penguin
، أنشئ اسمًا --penguin-skin
وأعطيه قيمة gray
## Tests
```yml
tests:
- text: ''
testString: 'assert(code.match(/.penguin\s*?{[\s\S]*--penguin-skin\s*?:\s*?gray\s*?;[\s\S]*}/gi), "penguin
class should declare the --penguin-skin
variable and assign it to gray
.");'
```
## Challenge Seed
## Solution
```js
// solution required
```