---
id: 612e9d142affc44a453655db
title: Step 16
challengeType: 0
dashedName: step-16
---
# --description--
Time to style the keys themselves. Create a `class` selector for the `.key` elements. Set the `background-color` set to the value `#ffffff`, the `position` property to `relative`, the `width` property to `41px`, and the `height` property to `175px`.
# --hints--
You should have a `.key` selector.
```js
assert(new __helpers.CSSHelp(document).getStyle('.key'));
```
Your `.key` selector should have a `background-color` property set to `#ffffff`.
```js
assert(new __helpers.CSSHelp(document).getStyle('.key')?.backgroundColor === 'rgb(255, 255, 255)');
```
Your `.key` selector should have the `position` property set to `relative`.
```js
assert(new __helpers.CSSHelp(document).getStyle('.key')?.position === 'relative');
```
Your `.key` selector should have a `width` property set to `41px`.
```js
assert(new __helpers.CSSHelp(document).getStyle('.key')?.width === '41px');
```
Your `.key` selector should have a `height` property set to `175px`.
```js
assert(new __helpers.CSSHelp(document).getStyle('.key')?.height === '175px');
```
# --seed--
## --seed-contents--
```html
Piano