freeCodeCamp/curriculum/challenges/chinese/03-front-end-libraries/bootstrap/use-responsive-design-with-...

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---
id: bad87fee1348bd9acde08712
title: 使用 Fluid 容器实现响应式设计
challengeType: 0
forumTopicId: 18362
dashedName: use-responsive-design-with-bootstrap-fluid-containers
---
# --description--
之前,在 freeCodeCamp 的 HTML5 和 CSS 章节中我们构建了一个 Cat Photo App。这次我们将会使用最受欢迎的响应式 CSS 框架 Bootstrap 来美化它。
Bootstrap 会根据你的屏幕大小来调节 HTML 元素的大小————因此称为 `Responsive Design`(响应式设计)。
通过响应式设计,我们将无需额外设计一个手机版的网页,因为它在任何尺寸的屏幕上看起来都还不错。
无论开发什么应用,你都可以通过将以下代码添加到你的 HTML 顶部来引入 Bootstrap 。
`<link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.7/css/bootstrap.min.css" integrity="sha384-BVYiiSIFeK1dGmJRAkycuHAHRg32OmUcww7on3RYdg4Va+PmSTsz/K68vbdEjh4u" crossorigin="anonymous"/>`
在该案例中,我们已经帮你把相应代码添加到页面中。记住使用 `>``/>` 闭合 `link` 标签来保证引入成功。
首先,我们应该把所有 HTML 标签放在 class 为 `container-fluid``div` 元素下(除了 `link` 标签和 `style` 标签)。
# --hints--
`div` 元素的 class 属性应该为 `container-fluid`
```js
assert($('div').hasClass('container-fluid'));
```
确保你的 `div` 元素有闭合标签.
```js
assert(
code.match(/<\/div>/g) &&
code.match(/<div/g) &&
code.match(/<\/div>/g).length === code.match(/<div/g).length
);
```
确保你已经将所有 HTML 元素内嵌在闭合的 `style` 标签后的 `.container-fluid` 元素中。
```js
assert($('.container-fluid').children().length >= 8);
```
# --seed--
## --seed-contents--
```html
<link href="https://fonts.googleapis.com/css?family=Lobster" rel="stylesheet" type="text/css">
<style>
.red-text {
color: red;
}
h2 {
font-family: Lobster, Monospace;
}
p {
font-size: 16px;
font-family: Monospace;
}
.thick-green-border {
border-color: green;
border-width: 10px;
border-style: solid;
border-radius: 50%;
}
.smaller-image {
width: 100px;
}
</style>
<h2 class="red-text">CatPhotoApp</h2>
<p>Click here for <a href="#">cat photos</a>.</p>
<a href="#"><img class="smaller-image thick-green-border" src="https://bit.ly/fcc-relaxing-cat" alt="A cute orange cat lying on its back."></a>
<p>Things cats love:</p>
<ul>
<li>cat nip</li>
<li>laser pointers</li>
<li>lasagna</li>
</ul>
<p>Top 3 things cats hate:</p>
<ol>
<li>flea treatment</li>
<li>thunder</li>
<li>other cats</li>
</ol>
<form action="https://freecatphotoapp.com/submit-cat-photo">
<label><input type="radio" name="indoor-outdoor"> Indoor</label>
<label><input type="radio" name="indoor-outdoor"> Outdoor</label>
<label><input type="checkbox" name="personality"> Loving</label>
<label><input type="checkbox" name="personality"> Lazy</label>
<label><input type="checkbox" name="personality"> Crazy</label>
<input type="text" placeholder="cat photo URL" required>
<button type="submit">Submit</button>
</form>
```
# --solutions--
```html
<link href="https://fonts.googleapis.com/css?family=Lobster" rel="stylesheet" type="text/css">
<style>
.red-text {
color: red;
}
h2 {
font-family: Lobster, Monospace;
}
p {
font-size: 16px;
font-family: Monospace;
}
.thick-green-border {
border-color: green;
border-width: 10px;
border-style: solid;
border-radius: 50%;
}
.smaller-image {
width: 100px;
}
</style>
<div class="container-fluid">
<h2 class="red-text">CatPhotoApp</h2>
<p>Click here for <a href="#">cat photos</a>.</p>
<a href="#"><img class="smaller-image thick-green-border" src="https://bit.ly/fcc-relaxing-cat" alt="A cute orange cat lying on its back."></a>
<p>Things cats love:</p>
<ul>
<li>cat nip</li>
<li>laser pointers</li>
<li>lasagna</li>
</ul>
<p>Top 3 things cats hate:</p>
<ol>
<li>flea treatment</li>
<li>thunder</li>
<li>other cats</li>
</ol>
<form action="https://freecatphotoapp.com/submit-cat-photo">
<label><input type="radio" name="indoor-outdoor"> Indoor</label>
<label><input type="radio" name="indoor-outdoor"> Outdoor</label>
<label><input type="checkbox" name="personality"> Loving</label>
<label><input type="checkbox" name="personality"> Lazy</label>
<label><input type="checkbox" name="personality"> Crazy</label>
<input type="text" placeholder="cat photo URL" required>
<button type="submit">Submit</button>
</form>
</div>
```