171 lines
4.7 KiB
Markdown
171 lines
4.7 KiB
Markdown
---
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id: bad87fee1348bd9acde08712
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title: 使用 Bootstrap Fluid 容器实现响应式设计
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challengeType: 0
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forumTopicId: 18362
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dashedName: use-responsive-design-with-bootstrap-fluid-containers
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---
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# --description--
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之前,在 freeCodeCamp 的 HTML5 和 CSS 章节中我们构建了一个 Cat Photo App。 我们在此基础上继续学习。 这次我们将会使用最受欢迎的响应式 CSS 框架 Bootstrap 来美化它。
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Bootstrap 会根据屏幕大小来动态调整 HTML 元素的大小————因此称为 <dfn>Responsive Design</dfn>(响应式设计)。
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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很棒。
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任何 Web 应用,都可以通过添加如下代码到 HTML 顶部来引入 Bootstrap 。
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```html
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<link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.7/css/bootstrap.min.css" integrity="sha384-BVYiiSIFeK1dGmJRAkycuHAHRg32OmUcww7on3RYdg4Va+PmSTsz/K68vbdEjh4u" crossorigin="anonymous"/>
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```
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不过在这里,已经预先为此页面添加了上述代码。 注意使用 `>` 或者 `/>` 两种方式闭合 `link` 标签都是可行的。
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首先,我们应该将所有 HTML( `link` 标签和 `style` 元素除外)嵌套在带有 `container-fluid` class 的 `div` 元素里面。
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# --hints--
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`div` 元素应该有 `container-fluid` class。
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```js
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assert($('div').hasClass('container-fluid'));
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```
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`div` 元素应该有结束标签。
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```js
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assert(
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code.match(/<\/div>/g) &&
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code.match(/<div/g) &&
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code.match(/<\/div>/g).length === code.match(/<div/g).length
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);
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```
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`style` 结束标签后面的所有 HTML 元素都应该被嵌套在 `.container-fluid` 里面。
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```js
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assert($('.container-fluid').children().length >= 8 && !$('.container-fluid').has("style").length && !$('.container-fluid').has("link").length);
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```
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# --seed--
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## --seed-contents--
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```html
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<link href="https://fonts.googleapis.com/css?family=Lobster" rel="stylesheet" type="text/css">
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<style>
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.red-text {
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color: red;
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}
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h2 {
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font-family: Lobster, Monospace;
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}
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p {
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font-size: 16px;
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font-family: Monospace;
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}
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.thick-green-border {
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border-color: green;
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border-width: 10px;
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border-style: solid;
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border-radius: 50%;
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}
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.smaller-image {
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width: 100px;
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}
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</style>
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<h2 class="red-text">CatPhotoApp</h2>
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<p>Click here for <a href="#">cat photos</a>.</p>
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<a href="#"><img class="smaller-image thick-green-border" src="https://cdn.freecodecamp.org/curriculum/cat-photo-app/relaxing-cat.jpg" alt="A cute orange cat lying on its back."></a>
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<p>Things cats love:</p>
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<ul>
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<li>cat nip</li>
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<li>laser pointers</li>
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<li>lasagna</li>
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</ul>
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<p>Top 3 things cats hate:</p>
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<ol>
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<li>flea treatment</li>
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<li>thunder</li>
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<li>other cats</li>
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</ol>
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<form action="https://freecatphotoapp.com/submit-cat-photo">
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<label><input type="radio" name="indoor-outdoor"> Indoor</label>
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<label><input type="radio" name="indoor-outdoor"> Outdoor</label>
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<label><input type="checkbox" name="personality"> Loving</label>
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<label><input type="checkbox" name="personality"> Lazy</label>
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<label><input type="checkbox" name="personality"> Crazy</label>
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<input type="text" placeholder="cat photo URL" required>
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<button type="submit">Submit</button>
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</form>
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```
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# --solutions--
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```html
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<link href="https://fonts.googleapis.com/css?family=Lobster" rel="stylesheet" type="text/css">
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<style>
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.red-text {
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color: red;
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}
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h2 {
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font-family: Lobster, Monospace;
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}
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p {
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font-size: 16px;
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font-family: Monospace;
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}
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.thick-green-border {
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border-color: green;
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border-width: 10px;
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border-style: solid;
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border-radius: 50%;
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}
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.smaller-image {
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width: 100px;
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}
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</style>
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<div class="container-fluid">
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<h2 class="red-text">CatPhotoApp</h2>
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<p>Click here for <a href="#">cat photos</a>.</p>
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<a href="#"><img class="smaller-image thick-green-border" src="https://cdn.freecodecamp.org/curriculum/cat-photo-app/relaxing-cat.jpg" alt="A cute orange cat lying on its back."></a>
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<p>Things cats love:</p>
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<ul>
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<li>cat nip</li>
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<li>laser pointers</li>
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<li>lasagna</li>
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</ul>
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<p>Top 3 things cats hate:</p>
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<ol>
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<li>flea treatment</li>
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<li>thunder</li>
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<li>other cats</li>
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</ol>
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<form action="https://freecatphotoapp.com/submit-cat-photo">
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<label><input type="radio" name="indoor-outdoor"> Indoor</label>
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<label><input type="radio" name="indoor-outdoor"> Outdoor</label>
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<label><input type="checkbox" name="personality"> Loving</label>
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<label><input type="checkbox" name="personality"> Lazy</label>
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<label><input type="checkbox" name="personality"> Crazy</label>
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<input type="text" placeholder="cat photo URL" required>
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<button type="submit">Submit</button>
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</form>
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</div>
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```
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