freeCodeCamp/curriculum/challenges/chinese/03-front-end-libraries/bootstrap/line-up-form-elements-responsively-with-bootstrap.md

---
id: bad87fee1348bd9aec908845
title: 使用 Bootstrap 响应式排列表单元素
challengeType: 0
forumTopicId: 18225
required:
  - 
    link: >-
      https://cdnjs.cloudflare.com/ajax/libs/font-awesome/4.2.0/css/font-awesome.css
    raw: true
dashedName: line-up-form-elements-responsively-with-bootstrap
---

# --description--

现在把表单里的 `input` 元素和 submit `button` （提交按钮）放在同一行。 跟着之前的做法来就行：准备好一个具有 `row` class 的 `div` 元素还有几个具有 `col-xs-*` class 的 `div` 元素。

先把表单的 text `input` （文本输入框）和 submit `button` （提交按钮）放进具有 `row` class 的 `div` 中。 再用 `col-xs-7` class 的 div 包裹表单的 text `input` （文本输入框）， `col-xs-5` class 的 `div` 包裹表单的 submit `button` （提交按钮）。

这是我们到目前为止 Cat Photo App 的最后一个挑战了。 祝你编码愉快。

# --hints--

确保提交按钮和文本输入框都在同一个具有 class 属性 `row` 的 div 元素中。

```js
assert(
  $('div.row:has(input[type="text"])').length > 0 &&
    $('div.row:has(button[type="submit"])').length > 0
);
```

表单的文本输入框应该嵌入到 `col-xs-7` class 属性的 div 内。

```js
assert($('div.col-xs-7:has(input[type="text"])').length > 0);
```

表单的提交按钮应该嵌入到 `col-xs-5` class 属性的 div 内。

```js
assert($('div.col-xs-5:has(button[type="submit"])').length > 0);
```

确保每一个 `div` 元素都有一个闭合标签。

```js
assert(
  code.match(/<\/div>/g) &&
    code.match(/<div/g) &&
    code.match(/<\/div>/g).length === code.match(/<div/g).length
);
```

# --seed--

## --seed-contents--

```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">
  <div class="row">
    <div class="col-xs-8">
      <h2 class="text-primary text-center">CatPhotoApp</h2>
    </div>
    <div class="col-xs-4">
      <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>
    </div>
  </div>
  <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"><i class="fa fa-thumbs-up"></i> Like</button>
    </div>
    <div class="col-xs-4">
      <button class="btn btn-block btn-info"><i class="fa fa-info-circle"></i> Info</button>
    </div>
    <div class="col-xs-4">
      <button class="btn btn-block btn-danger"><i class="fa fa-trash"></i> 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="https://freecatphotoapp.com/submit-cat-photo">
    <div class="row">
      <div class="col-xs-6">
        <label><input type="radio" name="indoor-outdoor"> Indoor</label>
      </div>
      <div class="col-xs-6">
        <label><input type="radio" name="indoor-outdoor"> Outdoor</label>
      </div>
    </div>
    <div class="row">
      <div class="col-xs-4">
        <label><input type="checkbox" name="personality"> Loving</label>
      </div>
      <div class="col-xs-4">
        <label><input type="checkbox" name="personality"> Lazy</label>
      </div>
      <div class="col-xs-4">
        <label><input type="checkbox" name="personality"> Crazy</label>
      </div>
    </div>
    <input type="text" class="form-control" placeholder="cat photo URL" required>
    <button type="submit" class="btn btn-primary"><i class="fa fa-paper-plane"></i> Submit</button>
  </form>
</div>
```

# --solutions--

```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">
  <div class="row">
    <div class="col-xs-8">
      <h2 class="text-primary text-center">CatPhotoApp</h2>
    </div>
    <div class="col-xs-4">
      <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>
    </div>
  </div>
  <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"><i class="fa fa-thumbs-up"></i> Like</button>
    </div>
    <div class="col-xs-4">
      <button class="btn btn-block btn-info"><i class="fa fa-info-circle"></i> Info</button>
    </div>
    <div class="col-xs-4">
      <button class="btn btn-block btn-danger"><i class="fa fa-trash"></i> 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="https://freecatphotoapp.com/submit-cat-photo">
    <div class="row">
      <div class="col-xs-6">
        <label><input type="radio" name="indoor-outdoor"> Indoor</label>
      </div>
      <div class="col-xs-6">
        <label><input type="radio" name="indoor-outdoor"> Outdoor</label>
      </div>
    </div>
    <div class="row">
      <div class="col-xs-4">
        <label><input type="checkbox" name="personality"> Loving</label>
      </div>
      <div class="col-xs-4">
        <label><input type="checkbox" name="personality"> Lazy</label>
      </div>
      <div class="col-xs-4">
        <label><input type="checkbox" name="personality"> Crazy</label>
      </div>
    </div>
    <div class="row">
      <div class="col-xs-7">
        <input type="text" class="form-control" placeholder="cat photo URL" required>
      </div>
      <div class="col-xs-5">
        <button type="submit" class="btn btn-primary"><i class="fa fa-paper-plane"></i> Submit</button>
      </div>
    </div>
  </form>
</div>
```