---
id: 619be73b3c806006ccc00bb0
title: 步驟 40
challengeType: 0
dashedName: step-40
---
# --description--
將僞元素的 `width` 設置爲其父元素的一半，`height` 設置爲其父元素的 `45%`，`background-color` 設置爲 `gray`。
# --hints--
你應該將 `.penguin-body::before` 的 `width` 設置爲 `50%`。
```js
assert.equal(new __helpers.CSSHelp(document).getStyle('.penguin-body::before')?.width, '50%');
```
你應該將 `.penguin-body::before` 的 `height` 設置爲 `45%`。
```js
assert.equal(new __helpers.CSSHelp(document).getStyle('.penguin-body::before')?.height, '45%');
```
你應該給 `.penguin-body::before` 一個 `background-color` 爲 `--fcc-expected--`，而不是 `--fcc-actual--`。
```js
assert.equal(new __helpers.CSSHelp(document).getStyle('.penguin-body::before')?.backgroundColor, 'gray');
```
# --seed--
## --seed-contents--
```html
Penguin
```
```css
body {
background: linear-gradient(45deg, rgb(118, 201, 255), rgb(247, 255, 222));
margin: 0;
padding: 0;
width: 100%;
height: 100vh;
overflow: clip;
}
.left-mountain {
width: 300px;
height: 300px;
background: linear-gradient(rgb(203, 241, 228), rgb(80, 183, 255));
position: absolute;
transform: skew(0deg, 44deg);
z-index: 2;
margin-top: 100px;
}
.back-mountain {
width: 300px;
height: 300px;
background: linear-gradient(rgb(203, 241, 228), rgb(47, 170, 255));
position: absolute;
z-index: 1;
transform: rotate(45deg);
left: 110px;
top: 225px;
}
.sun {
width: 200px;
height: 200px;
background-color: yellow;
position: absolute;
border-radius: 50%;
top: -75px;
right: -75px;
}
.penguin {
width: 300px;
height: 300px;
margin: auto;
margin-top: 75px;
z-index: 4;
position: relative;
}
.penguin * {
position: absolute;
}
.penguin-head {
width: 50%;
height: 45%;
background: linear-gradient(
45deg,
gray,
rgb(239, 240, 228)
);
border-radius: 70% 70% 65% 65%;
top: 10%;
left: 25%;
z-index: 1;
}
.penguin-body {
width: 53%;
height: 45%;
background: linear-gradient(
45deg,
rgb(134, 133, 133) 0%,
rgb(234, 231, 231) 25%,
white 67%
);
border-radius: 80% 80% 100% 100%;
top: 40%;
left: 23.5%;
}
--fcc-editable-region--
.penguin-body::before {
content: "";
position: absolute;
}
--fcc-editable-region--
.ground {
width: 100vw;
height: 400px;
background: linear-gradient(90deg, rgb(88, 175, 236), rgb(182, 255, 255));
z-index: 3;
position: absolute;
margin-top: -58px;
}
```