freeCodeCamp/curriculum/challenges/chinese-traditional/14-responsive-web-design-22/learn-the-css-box-model-by-.../60a3e3396c7b40068ad6998f.md

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---
id: 60a3e3396c7b40068ad6998f
title: 步驟 37
challengeType: 0
dashedName: step-37
---
# --description--
矩形太小,它們的邊緣沒有繪畫的柔和品質。
通過將 `box-shadow` 設置爲 `0 0 3px 3px #efb762` 來增加區域並柔化 `.one` 的邊緣。
# --hints--
應該將 `box-shadow` 屬性設置爲 `0 0 3px 3px #efb762`
```js
const hasBoxShadow = new __helpers.CSSHelp(document).getCSSRules().some(x => x.style['box-shadow'] === 'rgb(239, 183, 98) 0px 0px 3px 3px');
assert(hasBoxShadow);
```
`.one` 元素的 `box-shadow` 值應爲 `0 0 3px 3px #efb762`
```js
const oneShadow = new __helpers.CSSHelp(document).getStyle('.one')?.getPropertyValue('box-shadow');
assert(oneShadow === 'rgb(239, 183, 98) 0px 0px 3px 3px');
```
# --seed--
## --seed-contents--
```css
.canvas {
width: 500px;
height: 600px;
background-color: #4d0f00;
overflow: hidden;
filter: blur(2px);
}
.frame {
border: 50px solid black;
width: 500px;
padding: 50px;
margin: 20px auto;
}
.one {
width: 425px;
height: 150px;
background-color: #efb762;
margin: 20px auto;
--fcc-editable-region--
--fcc-editable-region--
}
.two {
width: 475px;
height: 200px;
background-color: #8f0401;
margin: 0 auto 20px;
}
.one, .two {
filter: blur(1px);
}
.three {
width: 91%;
height: 28%;
background-color: #b20403;
margin: auto;
filter: blur(2px);
}
```
```html
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>Rothko Painting</title>
<link href="./styles.css" rel="stylesheet">
</head>
<body>
<div class="frame">
<div class="canvas">
<div class="one"></div>
<div class="two"></div>
<div class="three"></div>
</div>
</div>
</body>
</html>
```