125 lines
3.3 KiB
Markdown
125 lines
3.3 KiB
Markdown
---
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id: bad87fee1348bd9bedf08813
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title: Add Borders Around Your Elements
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challengeType: 0
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videoUrl: 'https://scrimba.com/c/c2MvnHZ'
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forumTopicId: 16630
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localeTitle: 在元素周围添加边框
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---
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## Description
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<section id='description'>
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CSS 边框具有<code>style</code>，<code>color</code>和<code>width</code>属性。
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假如我们想要创建一个 5px 的红色实线边框包围一个 HTML 元素，我们可以这样做：
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```html
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<style>
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.thin-red-border {
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border-color: red;
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border-width: 5px;
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border-style: solid;
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}
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</style>
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```
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</section>
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## Instructions
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<section id='instructions'>
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创建一个<code>thick-green-border</code> CSS class，该 class 应在 HTML 元素周围添加一个 10px 的绿色实线边框，将它应用在猫咪照片上。
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记得在一个元素上可以同时应用多个<code>class</code>，通过使用空格来分隔。例子如下：
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<code><img class="class1 class2"></code>
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</section>
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## Tests
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<section id='tests'>
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```yml
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tests:
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- text: '<code>img</code>元素应该含有<code>smaller-image</code> class。'
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testString: assert($("img").hasClass("smaller-image"));
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- text: '<code>img</code>元素应该含有<code>thick-green-border</code> class。'
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testString: assert($("img").hasClass("thick-green-border"));
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- text: '设置图片边框为<code>10px</code>。'
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testString: assert($("img").hasClass("thick-green-border") && parseInt($("img").css("border-top-width"), 10) >= 8 && parseInt($("img").css("border-top-width"), 10) <= 12);
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- text: '设置图片边框为<code>solid</code>实线。'
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testString: assert($("img").css("border-right-style") === "solid");
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- text: '<code>img</code>元素的边框颜色应该为绿色。'
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testString: assert($("img").css("border-left-color") === "rgb(0, 128, 0)");
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```
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</section>
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## Challenge Seed
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<section id='challengeSeed'>
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<div id='html-seed'>
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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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.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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<main>
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<p class="red-text">点击查看更多<a href="#">猫图</a>。</p>
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<a href="#"><img src="https://bit.ly/fcc-relaxing-cat" alt="一只仰卧着的萌猫" class="smaller-image"></a>
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<div>
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<p>猫咪最喜欢的三件东西：</p>
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<ul>
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<li>猫薄荷</li>
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<li>激光笔</li>
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<li>千层饼</li>
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</ul>
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<p>猫咪最讨厌的三件东西：</p>
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<ol>
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<li>跳蚤</li>
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<li>打雷</li>
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<li>同类</li>
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</ol>
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</div>
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<form action="https://freecatphotoapp.com/submit-cat-photo">
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<label><input type="radio" name="indoor-outdoor">室内</label>
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<label><input type="radio" name="indoor-outdoor">室外</label><br>
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<label><input type="checkbox" name="personality">忠诚</label>
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<label><input type="checkbox" name="personality">懒惰</label>
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<label><input type="checkbox" name="personality">积极</label><br>
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<input type="text" placeholder="猫咪图片地址" required>
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<button type="submit">提交</button>
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</form>
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</main>
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```
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</div>
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</section>
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## Solution
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<section id='solution'>
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```html
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// solution required
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```
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</section>
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