freeCodeCamp/curriculum/challenges/chinese/03-front-end-libraries/bootstrap/use-a-span-to-target-inline-elements.md

---
id: bad87fee1348bd9aedf08845
challengeType: 0
forumTopicId: 18370
localeTitle: 使用 span 创建行内元素
---

## Description
<section id='description'>
你可以使用 span 标签来创建行内元素。还记得我们怎么使用 <code>btn-block</code> class 来创建填满整行的按钮吗？
<button class='btn' style='background-color: rgb(0, 100, 0);  color: rgb(255, 255, 255);'>normal button</button>
<button class='btn btn-block' style='background-color: rgb(0, 100, 0);  color: rgb(255, 255, 255);'>btn-block button</button>
上面的例子就是 "inline" （行内）元素和 "block" （块级）元素的区别。
通过使用行内元素 <code>span</code>，你可以把不同的元素放在同一行，甚至能为一个元素的不同部分指定样式。
把 "Things cats love" 中的 "love" 放入 <code>span</code> 标签。然后为其添加 <code>text-danger</code> class 来使其文字变成红色。
"Top 3 things cats hate" 元素的写法如下：
<code>&#60;p&#62;Top 3 things cats &#60;span class="text-danger"&#62;hate:&#60;/span&#62;&#60;/p&#62;</code>
</section>

## Instructions
<section id='instructions'>

</section>

## Tests
<section id='tests'>

```yml
tests:
  - text: <code>span</code> 元素应该在 <code>p</code> 元素内。
    testString: assert($("p span") && $("p span").length > 0);
  - text: <code>span</code> 元素应该只含有文本 <code>love</code>。
    testString: assert($("p span") && $("p span").text().match(/love/i) && !$("p span").text().match(/Things cats/i));
  - text: <code>span</code> 元素应该含有 class <code>text-danger</code>。
    testString: assert($("span").hasClass("text-danger"));
  - text: 确保你的 <code>span</code> 元素有一个闭合标签。
    testString: assert(code.match(/<\/span>/g) && code.match(/<span/g) && code.match(/<\/span>/g).length === code.match(/<span/g).length);

```

</section>

## Challenge Seed
<section id='challengeSeed'>

<div id='html-seed'>

```html
<link href="https://fonts.googleapis.com/css?family=Lobster" rel="stylesheet" type="text/css">
<style>

  h2 {
    font-family: Lobster, Monospace;
  }

  .thick-green-border {
    border-color: green;
    border-width: 10px;
    border-style: solid;
    border-radius: 50%;
  }

</style>

<div class="container-fluid">
  <h2 class="text-primary text-center">CatPhotoApp</h2>

  <a href="#"><img class="img-responsive thick-green-border" src="https://bit.ly/fcc-relaxing-cat" alt="A cute orange cat lying on its back."></a>

  <img src="https://bit.ly/fcc-running-cats" class="img-responsive" alt="Three kittens running towards the camera.">
  <div class="row">
    <div class="col-xs-4">
      <button class="btn btn-block btn-primary">Like</button>
    </div>
    <div class="col-xs-4">
      <button class="btn btn-block btn-info">Info</button>
    </div>
    <div class="col-xs-4">
      <button class="btn btn-block btn-danger">Delete</button>
    </div>
  </div>
  <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>
```

</div>



</section>

## Solution
<section id='solution'>

```html
<link href="https://fonts.googleapis.com/css?family=Lobster" rel="stylesheet" type="text/css">
<style>

  h2 {
    font-family: Lobster, Monospace;
  }

  .thick-green-border {
    border-color: green;
    border-width: 10px;
    border-style: solid;
    border-radius: 50%;
  }

</style>

<div class="container-fluid">
  <h2 class="text-primary text-center">CatPhotoApp</h2>

  <a href="#"><img class="img-responsive thick-green-border" src="https://bit.ly/fcc-relaxing-cat" alt="A cute orange cat lying on its back."></a>

  <img src="https://bit.ly/fcc-running-cats" class="img-responsive" alt="Three kittens running towards the camera.">
  <div class="row">
    <div class="col-xs-4">
      <button class="btn btn-block btn-primary">Like</button>
    </div>
    <div class="col-xs-4">
      <button class="btn btn-block btn-info">Info</button>
    </div>
    <div class="col-xs-4">
      <button class="btn btn-block btn-danger">Delete</button>
    </div>
  </div>
  <p>Things cats <span class="text-danger">love</span>:</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="/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>
```

</section>