---
id: 60b69a66b6ddb80858c5158c
title: Step 22
challengeType: 0
dashedName: step-22
---
# --description--
Using an `id` selector, create a rule for your `black-mask` element. Give it a `width` of `100%`, a `height` of `50px`, and a `background-color` of `rgb(45, 31, 19)`.
# --hints--
You should have a `#black-mask` selector.
```js
assert(new __helpers.CSSHelp(document).getStyle('#black-mask'));
```
Your `#black-mask` selector should have a `width` property set to `100%`.
```js
assert(new __helpers.CSSHelp(document).getStyle('#black-mask')?.width === '100%');
```
Your `#black-mask` selector should have a `height` property set to `50px`.
```js
assert(new __helpers.CSSHelp(document).getStyle('#black-mask')?.height === '50px');
```
Your `#black-mask` selector should have a `background-color` property set to `rgb(45, 31, 19)`.
```js
assert(new __helpers.CSSHelp(document).getStyle('#black-mask')?.backgroundColor === 'rgb(45, 31, 19)');
```
# --seed--
## --seed-contents--
```html
Picasso Painting