--- 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
```html
```
## Solution
```js // solution required ```