# 1.bootstrap模型
```
<!DOCTYPE html>
<html lang="zh-CN">
<head>
<meta charset="utf-8">
<meta http-equiv="X-UA-Compatible" content="IE=edge">
<meta name="viewport" content="width=device-width, initial-scale=1">
<!-- 上述3個meta標簽*必須*放在最前面，任何其他內容都*必須*跟隨其后！ -->
<title>Bootstrap 101 Template</title>
<!-- Bootstrap -->
<link href="https://cdn.jsdelivr.net/npm/bootstrap@3.3.7/dist/css/bootstrap.min.css" rel="stylesheet">
<!-- HTML5 shim 和 Respond.js 是為了讓 IE8 支持 HTML5 元素和媒體查詢（media queries）功能 -->
<!-- 警告：通過 file:// 協議（就是直接將 html 頁面拖拽到瀏覽器中）訪問頁面時 Respond.js 不起作用 -->
<!--[if lt IE 9]>
<script src="https://cdn.jsdelivr.net/npm/html5shiv@3.7.3/dist/html5shiv.min.js"></script>
<script src="https://cdn.jsdelivr.net/npm/respond.js@1.4.2/dest/respond.min.js"></script>
<![endif]-->
</head>
<body>
<h1>你好，世界！</h1>
<!-- jQuery (Bootstrap 的所有 JavaScript 插件都依賴 jQuery，所以必須放在前邊) -->
<script src="https://cdn.jsdelivr.net/npm/jquery@1.12.4/dist/jquery.min.js"></script>
<!-- 加載 Bootstrap 的所有 JavaScript 插件。你也可以根據需要只加載單個插件。 -->
<script src="https://cdn.jsdelivr.net/npm/bootstrap@3.3.7/dist/js/bootstrap.min.js"></script>
</body>
</html>
```
# 2.排版容器
```
```
# 3.柵格系統
柵格系統通過一系列的行和列來創建頁面布局，一行默認是12列
響應式網格系統隨著屏幕或視口（viewport）尺寸的增加，系統會自動分為最多12列。
工作原理
- 行必須放置在 .container class 內，以便獲得適當的對齊（alignment）和內邊距（padding）。
- 使用行來創建列的水平組。
- 內容應該放置在列內，且唯有列可以是行的直接子元素。
- 預定義的網格類，比如 .row 和 .col-xs-4，可用于快速創建網格布局。LESS 混合類可用于更多語義布局。
- 列通過內邊距（padding）來創建列內容之間的間隙。該內邊距是通過 .rows 上的外邊距（margin）取負，表示第一列和最后一列的行偏移。
- 網格系統是通過指定您想要橫跨的十二個可用的列來創建的。例如，要創建三個相等的列，則使用三個 .col-xs-4。
媒體查詢
媒體查詢是非常別致的"有條件的 CSS 規則"。它只適用于一些基于某些規定條件的 CSS。如果滿足那些條件，則應用相應的樣式。
```
/* 超小設備（手機，小于 768px） */
/* Bootstrap 中默認情況下沒有媒體查詢 */
/* 小型設備（平板電腦，768px 起） */
@media (min-width: @screen-sm-min) { ... }
/* 中型設備（臺式電腦，992px 起） */
@media (min-width: @screen-md-min) { ... }
/* 大型設備（大臺式電腦，1200px 起） */
@media (min-width: @screen-lg-min) { ... }
```
## 柵格參數
## 從堆疊到水平排列
```
<div class="row">
<div class="col-md-1">.col-md-1</div>
<div class="col-md-1">.col-md-1</div>
<div class="col-md-1">.col-md-1</div>
<div class="col-md-1">.col-md-1</div>
<div class="col-md-1">.col-md-1</div>
<div class="col-md-1">.col-md-1</div>
<div class="col-md-1">.col-md-1</div>
<div class="col-md-1">.col-md-1</div>
<div class="col-md-1">.col-md-1</div>
<div class="col-md-1">.col-md-1</div>
<div class="col-md-1">.col-md-1</div>
<div class="col-md-1">.col-md-1</div>
</div>
<div class="row">
<div class="col-md-8">.col-md-8</div>
<div class="col-md-4">.col-md-4</div>
</div>
<div class="row">
<div class="col-md-4">.col-md-4</div>
<div class="col-md-4">.col-md-4</div>
<div class="col-md-4">.col-md-4</div>
</div>
<div class="row">
<div class="col-md-6">.col-md-6</div>
<div class="col-md-6">.col-md-6</div>
</div>
```
## 如果在一個 .row 內包含的列（column）大于12個，包含多余列（column）的元素將作為一個整體單元被另起一行排列。
## 列重置
## 在某些閾值時，某些列可能會出現比別的列高的情況。 當屏幕寬度變小的時候 會變成：
## 這時就需要使用 .clearfix 和 響應式工具類。
```
<div class="row">
<div class="col-xs-6 col-sm-3">.col-xs-6 .col-sm-3</div>
<div class="col-xs-6 col-sm-3">.col-xs-6 .col-sm-3</div>
<!-- Add the extra clearfix for only the required viewport -->
<div class="clearfix visible-xs-block"></div>
<div class="col-xs-6 col-sm-3">.col-xs-6 .col-sm-3</div>
<div class="col-xs-6 col-sm-3">.col-xs-6 .col-sm-3</div>
</div>
```
## 效果：
## 當分的列不夠12的時候
## 除了列在分界點清除響應， 您可能需要 重置偏移, 后推或前拉某個列。 用到col-md-offset- *這個列
```
<div class="row">
<div class="col-sm-5 col-md-6">.col-sm-5 .col-md-6</div>
<div class="col-sm-5 col-md-6 ">.col-sm-5 .col-sm-offset-2 .col-md-6 .col-md-offset-0</div>
</div>
<div class="row">
<div class="col-sm-6 col-md-5 col-lg-6">.col-sm-6 .col-md-5 .col-lg-6</div>
<div class="col-sm-6 col-md-5 col-md-offset-2 col-lg-6 col-lg-offset-0">.col-sm-6 .col-md-5 .col-md-offset-2 .col-lg-6 .col-lg-offset-0</div>
</div>
</div>
```
使用完的效果如下
## 列偏移
```
當分的不夠12的時候可以使用列偏移將屬性
使用 .col-md-offset-* 類可以將列向右側偏移。這些類實際是通過使用 * 選擇器為當前元素增加了左側的邊距（margin）。例如，.col-md-offset-4 類將 .col-md-4 元素向右側偏移了4個列（column）的寬度。
```
## 使用偏移后
## 代碼
```
<!-- 列偏移 -->
<div class="row">
<div class="col-md-4">.col-md-4</div>
<div class="col-md-4 col-md-offset-4">.col-md-4 .col-md-offset-4</div>
</div>
<div class="row">
<div class="col-md-3 col-md-offset-3">.col-md-3 .col-md-offset-3</div>
<div class="col-md-3 col-md-offset-3">.col-md-3 .col-md-offset-3</div>
</div>
<div class="row">
<div class="col-md-6 col-md-offset-3">.col-md-6 .col-md-offset-3</div>
</div>
</div>
```
## 列嵌套
為了使用內置的柵格系統將內容再次嵌套，可以通過添加一個新的 .row 元素和一系列 .col-sm-* 元素到已經存在的 .col-sm-* 元素內。被嵌套的行（row）所包含的列（column）的個數不能超過12（其實，沒有要求你必須占滿12列）。
## 列排序
通過使用 .col-md-push-* 和 .col-md-pull-* 類就可以很容易的改變列（column）的順序。
```
<div class="row">
<div class="col-md-9 col-md-push-3">.col-md-9 .col-md-push-3</div>
<div class="col-md-3 col-md-pull-9">.col-md-3 .col-md-pull-9</div>
</div>
```
# 4.排版
## HTML 中的所有標題標簽，
## 均可使用。另外，還提供了 .h1 到 .h6 類，為的是給內聯（inline）屬性的文本賦予標題的樣式。
```
<h1>h1. Bootstrap heading</h1>
<h2>h2. Bootstrap heading</h2>
<h3>h3. Bootstrap heading</h3>
<h4>h4. Bootstrap heading</h4>
<h5>h5. Bootstrap heading</h5>
<h6>h6. Bootstrap heading</h6>
```
## 在標題內還可以包含 標簽或賦予 .small 類的元素，可以用來標記副標題。
```
h1>h1. Bootstrap heading <small>Secondary text</small></h1>
<h2>h2. Bootstrap heading <small>Secondary text</small></h2>
<h3>h3. Bootstrap heading <small>Secondary text</small></h3>
<h4>h4. Bootstrap heading <small>Secondary text</small></h4>
<h5>h5. Bootstrap heading <small>Secondary text</small></h5>
<h6>h6. Bootstrap heading <small>Secondary text</small></h6>
```
## 頁面主題
## Bootstrap 將全局 font-size 設置為 14px，line-height 設置為 1.428。這些屬性直接賦予 元素和所有段落元素。另外，
（段落）元素還被設置了等于 1/2 行高（即 10px）的底部外邊距（margin）
## 中心內容
## p標簽通過添加 .lead 類可以讓段落突出顯示。
```
<p class="lead">...阿薩大三大所多阿薩德阿薩德阿達阿薩的</p>
```
## 內聯文本元素
```
You can use the mark tag to <mark>highlight</mark> text.
/*被刪除的文本*/
<del>This line of text is meant to be treated as deleted text.</del>
/*無用文本*/
<s>This line of text is meant to be treated as no longer accurate.</s>
/*插入文本*/
<ins>This line of text is meant to be treated as an addition to the document.</ins>
/*插入文本*/
<u>This line of text will render as underlined</u>
/*小號文本
使用 <small> 標簽包裹，其內的文本將被設置為父容器字體大小的 85%。標題元素中 嵌套的 <small> 元素被設置不同的 font-size 。
*/
<small>This line of text is meant to be treated as fine print.</small>
/*著重文本*/
<strong>rendered as bold text</strong>
/*斜體*/
<em>rendered as italicized text</em>
/*對齊*/
<p class="text-left">Left aligned text.</p>
<p class="text-center">Center aligned text.</p>
<p class="text-right">Right aligned text.</p>
<p class="text-justify">Justified text.</p>
<p class="text-nowrap">No wrap text.</p>
```
# 5.表格
## 基本實例
```
<div class="container">
<h2>表格</h2>
<p> .table 為任意表格添加基本樣式 (只有橫向分隔線):</p>
<table class="table">
<thead>
<tr>
<th>#</th>
<th>Firstname</th>
</tr>
</thead>
<tbody>
<tr>
<td>1</td>
<td>Anna</td>
</tr>
<tr>
<td>2</td>
<td>Debbie</td>
</tr>
<tr>
<td>3</td>
<td>John</td>
</tr>
</tbody>
</table>
</div>
```
## 條紋表格
```
<table class="table table-striped">
<caption>條紋表格布局</caption>
<thead>
<tr>
<th>名稱</th>
<th>城市</th>
<th>郵編</th>
</tr>
</thead>
<tbody>
<tr>
<td>Tanmay</td>
<td>Bangalore</td>
<td>560001</td>
</tr>
<tr>
<td>Sachin</td>
<td>Mumbai</td>
<td>400003</td>
</tr>
<tr>
<td>Uma</td>
<td>Pune</td>
<td>411027</td>
</tr>
</tbody>
</table>
```
## 鼠標懸停
```
<table class="table table-striped table-bordered table-hover table-condensed">
<thead>
<tr>
<th>#</th>
<th>Firstname</th>
</tr>
</thead>
<tbody>
<tr>
<td>1</td>
<td>Anna</td>
</tr>
<tr>
<td>2</td>
<td>Debbie</td>
</tr>
<tr>
<td>3</td>
<td>John</td>
</tr>
</tbody>
</table>
```
## 狀態類
```
<table class="table">
<caption>上下文表格布局</caption>
<thead>
<tr>
<th>產品</th>
<th>付款日期</th>
<th>狀態</th></tr>
</thead>
<tbody>
<tr class="active">
<td>產品1</td>
<td>23/11/2013</td>
<td>待發貨</td></tr>
<tr class="success">
<td>產品2</td>
<td>10/11/2013</td>
<td>發貨中</td></tr>
<tr class="warning">
<td>產品3</td>
<td>20/10/2013</td>
<td>待確認</td></tr>
<tr class="danger">
<td>產品4</td>
<td>20/10/2013</td>
<td>已退貨</td></tr>
</tbody>
</table>
```
## 響應式表格
## 通過把任意的 .table 包在 .table-responsive class 內，您可以讓表格水平滾動以適應小型設備（小于 768px）。當在大于 768px 寬的大型設備上查看時，您將看不到任何的差別。
```
<div class="table-responsive">
<table class="table">
<caption>響應式表格布局</caption>
<thead>
<tr>
<th>產品</th>
<th>付款日期</th>
<th>狀態</th></tr>
</thead>
<tbody>
<tr>
<td>產品1</td>
<td>23/11/2013</td>
<td>待發貨</td></tr>
<tr>
<td>產品2</td>
<td>10/11/2013</td>
<td>發貨中</td></tr>
<tr>
<td>產品3</td>
<td>20/10/2013</td>
<td>待確認</td></tr>
<tr>
<td>產品4</td>
<td>20/10/2013</td>
<td>已退貨</td></tr>
</tbody>
</table>
</div>
```
# 6.表單
## 基本實例
```
<form>
<div class="form-group">
<label for="exampleInputEmail1">Email address</label>
<input type="email" class="form-control" id="exampleInputEmail1" placeholder="Email">
</div>
<div class="form-group">
<label for="exampleInputPassword1">Password</label>
<input type="password" class="form-control" id="exampleInputPassword1" placeholder="Password">
</div>
<div class="form-group">
<label for="exampleInputFile">File input</label>
<input type="file" id="exampleInputFile">
<p class="help-block">Example block-level help text here.</p>
</div>
<div class="checkbox">
<label>
<input type="checkbox"> Check me out
</label>
</div>
<button type="submit" class="btn btn-default">Submit</button>
</form>
```
## 內聯表單
```
<form class="form-inline">
<div class="form-group">
<label for="exampleInputName2">Name</label>
<input type="text" class="form-control" id="exampleInputName2" placeholder="Jane Doe">
</div>
<div class="form-group">
<label for="exampleInputEmail2">Email</label>
<input type="email" class="form-control" id="exampleInputEmail2" placeholder="jane.doe@example.com">
</div>
<button type="submit" class="btn btn-default">Send invitation</button>
</form>
<form class="form-inline">
<div class="form-group">
<label class="sr-only" for="exampleInputEmail3">Email address</label>
<input type="email" class="form-control" id="exampleInputEmail3" placeholder="Email">
</div>
<div class="form-group">
<label class="sr-only" for="exampleInputPassword3">Password</label>
<input type="password" class="form-control" id="exampleInputPassword3" placeholder="Password">
</div>
<div class="checkbox">
<label>
<input type="checkbox"> Remember me
</label>
</div>
<button type="submit" class="btn btn-default">Sign in</button>
</form>
```
## 水平排列的表單
```
<form class="form-horizontal">
<div class="form-group">
<label for="inputEmail3" class="col-sm-2 control-label">Email</label>
<div class="col-sm-10">
<input type="email" class="form-control" id="inputEmail3" placeholder="Email">
</div>
</div>
<div class="form-group">
<label for="inputPassword3" class="col-sm-2 control-label">Password</label>
<div class="col-sm-10">
<input type="password" class="form-control" id="inputPassword3" placeholder="Password">
</div>
</div>
<div class="form-group">
<div class="col-sm-offset-2 col-sm-10">
<div class="checkbox">
<label>
<input type="checkbox"> Remember me
</label>
</div>
</div>
</div>
<div class="form-group">
<div class="col-sm-offset-2 col-sm-10">
<button type="submit" class="btn btn-default">Sign in</button>
</div>
</div>
</form>
```
## 被支持的控件
```
<input type="text" class="form-control" placeholder="Text input">
```
## 文本域
```
<textarea class="form-control" rows="3"></textarea>
```
## 多選和單選框
```
<div class="checkbox">
<label>
<input type="checkbox" value="">
Option one is this and that—be sure to include why it's great
</label>
</div>
<div class="checkbox disabled">
<label>
<input type="checkbox" value="" disabled>
Option two is disabled
</label>
</div>
<div class="radio">
<label>
<input type="radio" name="optionsRadios" id="optionsRadios1" value="option1" checked>
Option one is this and that—be sure to include why it's great
</label>
</div>
<div class="radio">
<label>
<input type="radio" name="optionsRadios" id="optionsRadios2" value="option2">
Option two can be something else and selecting it will deselect option one
</label>
</div>
<div class="radio disabled">
<label>
<input type="radio" name="optionsRadios" id="optionsRadios3" value="option3" disabled>
Option three is disabled
</label>
</div>
```
## 內聯框和多選框
```
<label class="checkbox-inline">
<input type="checkbox" id="inlineCheckbox1" value="option1"> 1
</label>
<label class="checkbox-inline">
<input type="checkbox" id="inlineCheckbox2" value="option2"> 2
</label>
<label class="checkbox-inline">
<input type="checkbox" id="inlineCheckbox3" value="option3"> 3
</label>
<label class="radio-inline">
<input type="radio" name="inlineRadioOptions" id="inlineRadio1" value="option1"> 1
</label>
<label class="radio-inline">
<input type="radio" name="inlineRadioOptions" id="inlineRadio2" value="option2"> 2
</label>
<label class="radio-inline">
<input type="radio" name="inlineRadioOptions" id="inlineRadio3" value="option3"> 3
</label>
```
下拉列表
```
<select class="form-control">
<option>1</option>
<option>2</option>
<option>3</option>
<option>4</option>
<option>5</option>
</select>
```
## 靜態控件
```
<form class="form-horizontal">
<div class="form-group">
<label class="col-sm-2 control-label">Email</label>
<div class="col-sm-10">
<p class="form-control-static">email@example.com</p>
</div>
</div>
<div class="form-group">
<label for="inputPassword" class="col-sm-2 control-label">Password</label>
<div class="col-sm-10">
<input type="password" class="form-control" id="inputPassword" placeholder="Password">
</div>
</div>
</form>
<form class="form-inline">
<div class="form-group">
<label class="sr-only">Email</label>
<p class="form-control-static">email@example.com</p>
</div>
<div class="form-group">
<label for="inputPassword2" class="sr-only">Password</label>
<input type="password" class="form-control" id="inputPassword2" placeholder="Password">
</div>
<button type="submit" class="btn btn-default">Confirm identity</button>
</form>
```
## 焦點狀態
## 禁用的輸入框 input
## 禁用的字段集 fieldset
## 驗證狀態
```
<form class="form-horizontal" role="form">
<div class="form-group">
<label class="col-sm-2 control-label">聚焦</label>
<div class="col-sm-10">
<input class="form-control" id="focusedInput" type="text" value="該輸入框獲得焦點...">
</div>
</div>
<div class="form-group">
<label for="inputPassword" class="col-sm-2 control-label">禁用</label>
<div class="col-sm-10">
<input class="form-control" id="disabledInput" type="text" placeholder="該輸入框禁止輸入..." disabled>
</div>
</div>
<fieldset disabled>
<div class="form-group">
<label for="disabledTextInput" class="col-sm-2 control-label">禁用輸入（Fieldset disabled）</label>
<div class="col-sm-10">
<input type="text" id="disabledTextInput" class="form-control" placeholder="禁止輸入">
</div>
</div>
<div class="form-group">
<label for="disabledSelect" class="col-sm-2 control-label">禁用選擇菜單（Fieldset disabled）</label>
<div class="col-sm-10">
<select id="disabledSelect" class="form-control">
<option>禁止選擇</option>
</select>
</div>
</div>
</fieldset>
<div class="form-group has-success">
<label class="col-sm-2 control-label" for="inputSuccess">輸入成功</label>
<div class="col-sm-10">
<input type="text" class="form-control" id="inputSuccess">
</div>
</div>
<div class="form-group has-warning">
<label class="col-sm-2 control-label" for="inputWarning">輸入警告</label>
<div class="col-sm-10">
<input type="text" class="form-control" id="inputWarning">
</div>
</div>
<div class="form-group has-error">
<label class="col-sm-2 control-label" for="inputError">輸入錯誤</label>
<div class="col-sm-10">
<input type="text" class="form-control" id="inputError">
</div>
</div>
</form>
```
## 添加額外的圖標
```
<div class="form-group has-success has-feedback">
<label class="control-label" for="inputSuccess2">Input with success</label>
<input type="text" class="form-control" id="inputSuccess2" aria-describedby="inputSuccess2Status">
<span class="glyphicon glyphicon-ok form-control-feedback" aria-hidden="true"></span>
<span id="inputSuccess2Status" class="sr-only">(success)</span>
</div>
<div class="form-group has-warning has-feedback">
<label class="control-label" for="inputWarning2">Input with warning</label>
<input type="text" class="form-control" id="inputWarning2" aria-describedby="inputWarning2Status">
<span class="glyphicon glyphicon-warning-sign form-control-feedback" aria-hidden="true"></span>
<span id="inputWarning2Status" class="sr-only">(warning)</span>
</div>
<div class="form-group has-error has-feedback">
<label class="control-label" for="inputError2">Input with error</label>
<input type="text" class="form-control" id="inputError2" aria-describedby="inputError2Status">
<span class="glyphicon glyphicon-remove form-control-feedback" aria-hidden="true"></span>
<span id="inputError2Status" class="sr-only">(error)</span>
</div>
<div class="form-group has-success has-feedback">
<label class="control-label" for="inputGroupSuccess1">Input group with success</label>
<div class="input-group">
<span class="input-group-addon">@</span>
<input type="text" class="form-control" id="inputGroupSuccess1" aria-describedby="inputGroupSuccess1Status">
</div>
<span class="glyphicon glyphicon-ok form-control-feedback" aria-hidden="true"></span>
<span id="inputGroupSuccess1Status" class="sr-only">(success)</span>
</div>
```
## 水平排列的
```
<form class="form-horizontal">
<div class="form-group has-success has-feedback">
<label class="control-label col-sm-3" for="inputSuccess3">Input with success</label>
<div class="col-sm-9">
<input type="text" class="form-control" id="inputSuccess3" aria-describedby="inputSuccess3Status">
<span class="glyphicon glyphicon-ok form-control-feedback" aria-hidden="true"></span>
<span id="inputSuccess3Status" class="sr-only">(success)</span>
</div>
</div>
<div class="form-group has-success has-feedback">
<label class="control-label col-sm-3" for="inputGroupSuccess2">Input group with success</label>
<div class="col-sm-9">
<div class="input-group">
<span class="input-group-addon">@</span>
<input type="text" class="form-control" id="inputGroupSuccess2" aria-describedby="inputGroupSuccess2Status">
</div>
<span class="glyphicon glyphicon-ok form-control-feedback" aria-hidden="true"></span>
<span id="inputGroupSuccess2Status" class="sr-only">(success)</span>
</div>
</div>
</form>
<form class="form-inline">
<div class="form-group has-success has-feedback">
<label class="control-label" for="inputSuccess4">Input with success</label>
<input type="text" class="form-control" id="inputSuccess4" aria-describedby="inputSuccess4Status">
<span class="glyphicon glyphicon-ok form-control-feedback" aria-hidden="true"></span>
<span id="inputSuccess4Status" class="sr-only">(success)</span>
</div>
</form>
<form class="form-inline">
<div class="form-group has-success has-feedback">
<label class="control-label" for="inputGroupSuccess3">Input group with success</label>
<div class="input-group">
<span class="input-group-addon">@</span>
<input type="text" class="form-control" id="inputGroupSuccess3" aria-describedby="inputGroupSuccess3Status">
</div>
<span class="glyphicon glyphicon-ok form-control-feedback" aria-hidden="true"></span>
<span id="inputGroupSuccess3Status" class="sr-only">(success)</span>
</div>
</form>
<div class="form-group has-success has-feedback">
<label class="control-label sr-only" for="inputSuccess5">Hidden label</label>
<input type="text" class="form-control" id="inputSuccess5" aria-describedby="inputSuccess5Status">
<span class="glyphicon glyphicon-ok form-control-feedback" aria-hidden="true"></span>
<span id="inputSuccess5Status" class="sr-only">(success)</span>
</div>
<div class="form-group has-success has-feedback">
<label class="control-label sr-only" for="inputGroupSuccess4">Input group with success</label>
<div class="input-group">
<span class="input-group-addon">@</span>
<input type="text" class="form-control" id="inputGroupSuccess4" aria-describedby="inputGroupSuccess4Status">
</div>
<span class="glyphicon glyphicon-ok form-control-feedback" aria-hidden="true"></span>
<span id="inputGroupSuccess4Status" class="sr-only">(success)</span>
</div>
```
## 控制尺寸
## 水平排列的表單組的尺寸
```
<form class="form-horizontal">
<div class="form-group form-group-lg">
<label class="col-sm-2 control-label" for="formGroupInputLarge">Large label</label>
<div class="col-sm-10">
<input class="form-control" type="text" id="formGroupInputLarge" placeholder="Large input">
</div>
</div>
<div class="form-group form-group-sm">
<label class="col-sm-2 control-label" for="formGroupInputSmall">Small label</label>
<div class="col-sm-10">
<input class="form-control" type="text" id="formGroupInputSmall" placeholder="Small input">
</div>
</div>
</form>
```
## 高度尺寸
```
<input class="form-control input-lg" type="text" placeholder=".input-lg">
<input class="form-control" type="text" placeholder="Default input">
<input class="form-control input-sm" type="text" placeholder=".input-sm">
<select class="form-control input-lg">...</select>
<select class="form-control">...</select>
<select class="form-control input-sm">...</select>
```
## 調整列（column）尺寸
```
<div class="row">
<div class="col-xs-2">
<input type="text" class="form-control" placeholder=".col-xs-2">
</div>
<div class="col-xs-3">
<input type="text" class="form-control" placeholder=".col-xs-3">
</div>
<div class="col-xs-4">
<input type="text" class="form-control" placeholder=".col-xs-4">
</div>
</div>
```
# 7.按鈕
## 預定義樣式
```
!-- Standard button -->
<button type="button" class="btn btn-default">（默認樣式）Default</button>
<!-- Provides extra visual weight and identifies the primary action in a set of buttons -->
<button type="button" class="btn btn-primary">（首選項）Primary</button>
<!-- Indicates a successful or positive action -->
<button type="button" class="btn btn-success">（成功）Success</button>
<!-- Contextual button for informational alert messages -->
<button type="button" class="btn btn-info">（一般信息）Info</button>
<!-- Indicates caution should be taken with this action -->
<button type="button" class="btn btn-warning">（警告）Warning</button>
<!-- Indicates a dangerous or potentially negative action -->
<button type="button" class="btn btn-danger">（危險）Danger</button>
<!-- Deemphasize a button by making it look like a link while maintaining button behavior -->
<button type="button" class="btn btn-link">（鏈接）Link</button>
```
尺寸
```
<p>
<button type="button" class="btn btn-primary btn-lg">（大按鈕）Large button</button>
<button type="button" class="btn btn-default btn-lg">（大按鈕）Large button</button>
</p>
<p>
<button type="button" class="btn btn-primary">（默認尺寸）Default button</button>
<button type="button" class="btn btn-default">（默認尺寸）Default button</button>
</p>
<p>
<button type="button" class="btn btn-primary btn-sm">（小按鈕）Small button</button>
<button type="button" class="btn btn-default btn-sm">（小按鈕）Small button</button>
</p>
<p>
<button type="button" class="btn btn-primary btn-xs">（超小尺寸）Extra small button</button>
<button type="button" class="btn btn-default btn-xs">（超小尺寸）Extra small button</button>
</p>
```
## 塊級元素
```
<button type="button" class="btn btn-primary btn-lg btn-block">（塊級元素）Block level button</button>
<button type="button" class="btn btn-default btn-lg btn-block">（塊級元素）Block level button</button>
```
## 激活狀態
當按鈕處于激活狀態時，其表現為被按壓下去（底色更深、邊框夜色更深、向內投射陰影）。
```
<button type="button" class="btn btn-primary btn-lg active">Primary button</button>
<button type="button" class="btn btn-default btn-lg active">Button</button>
```
## 鏈接元素
```
<a href="#" class="btn btn-primary btn-lg active" role="button">Primary link</a>
<a href="#" class="btn btn-default btn-lg active" role="button">Link</a>
```
## 禁用狀態
```
<button type="button" class="btn btn-lg btn-primary" disabled="disabled">Primary button</button>
<button type="button" class="btn btn-default btn-lg" disabled="disabled">Button</button>
<a href="#" class="btn btn-primary btn-lg disabled" role="button">Primary link</a>
<a href="#" class="btn btn-default btn-lg disabled" role="button">Link</a>
```
# 8.圖片
## 響應式圖片
```
<img src="..." class="img-responsive" alt="Responsive image">
```
## 圖片形狀
```
<img src="..." alt="..." class="img-rounded">
<img src="..." alt="..." class="img-circle">
<img src="..." alt="..." class="img-thumbnail">
```
# 9.輔助類
## 情境文本顏色
```
<p class="text-muted">...</p>
<p class="text-primary">...</p>
<p class="text-success">...</p>
<p class="text-info">...</p>
<p class="text-warning">...</p>
<p class="text-danger">...</p>
```
## 背景色
```
<p class="bg-primary">...</p>
<p class="bg-success">...</p>
<p class="bg-info">...</p>
<p class="bg-warning">...</p>
<p class="bg-danger">...</p>
```
## 關閉按鈕
```
<button type="button" class="close" aria-label="Close"><span aria-hidden="true">×</span></button>
```
## 三角符號
```
<span class="caret"></span>
```
## 快速浮動
```
<div class="pull-left">
向左快速浮動
</div>
<div class="pull-right">
向右快速浮動
</div>
```
## 內容居中
```
<div class="row">
<div class="center-block" style="width:200px;background-color:#ccc;">
這是 center-block 實例
</div>
</div>
```
## 清除浮動
```
<div class="clearfix" style="background: #D8D8D8;border: 1px solid #000;padding: 10px;">
<div class="pull-left" style="background:#58D3F7;">
向左快速浮動
</div>
<div class="pull-right" style="background: #DA81F5;">
向右快速浮動
</div>
</div>
```
## 顯示和隱藏內容
```
<div class="row" style="padding: 91px 100px 19px 50px;">
<div class="show" style="margin-left:10px;width:300px;background-color:#ccc;">
這是 show class 的實例
</div>
<div class="hidden" style="width:200px;background-color:#ccc;">
這是 hide class 的實例
</div>
</div>
```
## 屏幕閱讀器
##
## 您可以通過使用 class .sr-only 來把元素對所有設備隱藏，除了屏幕閱讀器。
```
<div class="row" style="padding: 91px 100px 19px 50px;">
<form class="form-inline" role="form">
<div class="form-group">
<label class="sr-only" for="email">Email 地址</label>
<input type="email" class="form-control" placeholder="Enter email">
</div>
<div class="form-group">
<label class="sr-only" for="pass">密碼</label>
<input type="password" class="form-control" placeholder="Password">
</div>
</form>
</div>
```
