freeCodeCamp/curriculum/challenges/chinese-traditional/14-responsive-web-design-22/learn-css-animation-by-buil.../6140d263016325162fd076fe.md

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---
id: 6140d263016325162fd076fe
title: 步驟 11
challengeType: 0
dashedName: step-11
---
# --description--
創建一個 `.cabin` 選擇器。 設置 `background-color``red`, `width``20%``height`爲 `20%`
# --hints--
你應該有一個 `.cabin` 選擇器。
```js
assert(new __helpers.CSSHelp(document).getStyle('.cabin'));
```
你的 `.cabin`選擇器應該有一個 `background-color` 屬性,設置爲 `red`
```js
assert(new __helpers.CSSHelp(document).getStyle('.cabin')?.backgroundColor === 'red');
```
你的 `.cabin` 選擇器應該有一個 `width` 屬性設置爲 `20%`
```js
assert(new __helpers.CSSHelp(document).getStyle('.cabin')?.width === '20%');
```
你的 `.cabin` 選擇器應該有一個 `height` 屬性設置爲 `20%`
```js
assert(new __helpers.CSSHelp(document).getStyle('.cabin')?.height === '20%');
```
# --seed--
## --seed-contents--
```html
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>Ferris Wheel</title>
<link rel="stylesheet" href="./styles.css">
</head>
<body>
<div class="wheel">
<span class="line"></span>
<span class="line"></span>
<span class="line"></span>
<span class="line"></span>
<span class="line"></span>
<span class="line"></span>
<div class="cabin"></div>
<div class="cabin"></div>
<div class="cabin"></div>
<div class="cabin"></div>
<div class="cabin"></div>
<div class="cabin"></div>
</div>
</body>
</html>
```
```css
.wheel {
border: 2px solid black;
border-radius: 50%;
margin-left: 50px;
position: absolute;
height: 55vw;
width: 55vw;
max-width: 500px;
max-height: 500px;
}
.line {
background-color: black;
width: 50%;
height: 2px;
position: absolute;
top: 50%;
left: 50%;
transform-origin: 0% 0%;
}
.line:nth-of-type(2) {
transform: rotate(60deg);
}
.line:nth-of-type(3) {
transform: rotate(120deg);
}
.line:nth-of-type(4) {
transform: rotate(180deg);
}
.line:nth-of-type(5) {
transform: rotate(240deg);
}
.line:nth-of-type(6) {
transform: rotate(300deg);
}
--fcc-editable-region--
--fcc-editable-region--
```