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---
id: 612e8eebe3a6dc3fcc33a66f
2021-10-21 10:07:52 -07:00
title: Step 11
2021-09-13 09:51:42 -07:00
challengeType: 0
2021-10-21 10:07:52 -07:00
dashedName: step-11
2021-09-13 09:51:42 -07:00
---
# --description--
Now target your `#piano` element with an `id` selector. Set `background-color` property to `#00471b` , the `width` property to `992px` and the `height` property to `290px` .
# --hints--
You should have a `#piano` selector.
```js
assert(new __helpers.CSSHelp(document).getStyle('#piano '));
```
Your `#piano` selector should have the `background-color` property set to `#00471b` .
```js
assert(new __helpers.CSSHelp(document).getStyle('#piano ')?.backgroundColor === 'rgb(0, 71, 27)');
```
Your `#piano` selector should have a `width` property set to `992px` .
```js
assert(new __helpers.CSSHelp(document).getStyle('#piano ')?.width === '992px');
```
Your `#piano` selector should have the `height` set to `290px` .
```js
assert(new __helpers.CSSHelp(document).getStyle('#piano ')?.height === '290px');
```
# --seed--
## --seed-contents--
```html
<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8" />
<title>Responsive Web Design Piano</title>
<meta name="viewport" content="width=device-width, initial-scale=1.0" />
<link rel="stylesheet" href="./styles.css">
</head>
<body>
<div id="piano">
<div class="keys">
<div class="key"></div>
<div class="key black--key"></div>
<div class="key black--key"></div>
<div class="key"></div>
<div class="key black--key"></div>
<div class="key black--key"></div>
<div class="key black--key"></div>
<div class="key"></div>
<div class="key black--key"></div>
<div class="key black--key"></div>
<div class="key"></div>
<div class="key black--key"></div>
<div class="key black--key"></div>
<div class="key black--key"></div>
<div class="key"></div>
<div class="key black--key"></div>
<div class="key black--key"></div>
<div class="key"></div>
<div class="key black--key"></div>
<div class="key black--key"></div>
<div class="key black--key"></div>
</div>
</div>
</body>
</html>
```
```css
html {
box-sizing: border-box;
}
*, * ::before, * ::after {
box-sizing: inherit;
}
--fcc-editable-region--
--fcc-editable-region--
```
