概述
        
        由于 <table> 元素在诸如日历和日期选择器之类的第三方小部件中的广泛使用,因此选择使用Bootstrap的表。 将基类
          .table 添加到任何 <table> 中,然后使用可选的修饰符类或自定义样式进行扩展。
          所有表样式都不会在Bootstrap中继承,这意味着任何嵌套表都可以独立于父表设置样式。
        
        使用最基本的表标记,这是基于 .table的表在Bootstrap中的外观。
        
          
            
              
                | # | 
                First | 
                Last | 
                Handle | 
              
            
            
              
                | 1 | 
                Mark | 
                Otto | 
                @mdo | 
              
              
                | 2 | 
                Jacob | 
                Thornton | 
                @fat | 
              
              
                | 3 | 
                Larry the Bird | 
                @twitter | 
              
            
          
         
        
        
          <table class="table">
<thead>
<tr>
  <th scope="col">#</th>
  <th scope="col">First</th>
  <th scope="col">Last</th>
  <th scope="col">Handle</th>
</tr>
</thead>
<tbody>
<tr>
  <th scope="row">1</th>
  <td>Mark</td>
  <td>Otto</td>
  <td>@mdo</td>
</tr>
<tr>
  <th scope="row">2</th>
  <td>Jacob</td>
  <td>Thornton</td>
  <td>@fat</td>
</tr>
<tr>
  <th scope="row">3</th>
  <td colspan="2">Larry the Bird</td>
  <td>@twitter</td>
</tr>
</tbody>
</table>
         
        变色
        
        使用上下文类给表格、表格行或单个单元格着色。
        
          
            
              
                | Class | 
                Heading | 
                Heading | 
              
            
            
              
                | Default | 
                Cell | 
                Cell | 
              
              
                | Primary | 
                Cell | 
                Cell | 
              
              
                | Secondary | 
                Cell | 
                Cell | 
              
              
                | Success | 
                Cell | 
                Cell | 
              
              
                | Danger | 
                Cell | 
                Cell | 
              
              
                | Warning | 
                Cell | 
                Cell | 
              
              
                | Info | 
                Cell | 
                Cell | 
              
              
                | Light | 
                Cell | 
                Cell | 
              
              
                | Dark | 
                Cell | 
                Cell | 
              
            
          
         
        
        
          <!-- On tables -->
<table class="table-primary">...</table>
<table class="table-secondary">...</table>
<table class="table-success">...</table>
<table class="table-danger">...</table>
<table class="table-warning">...</table>
<table class="table-info">...</table>
<table class="table-light">...</table>
<table class="table-dark">...</table>
<!-- On rows -->
<tr class="table-primary">...</tr>
<tr class="table-secondary">...</tr>
<tr class="table-success">...</tr>
<tr class="table-danger">...</tr>
<tr class="table-warning">...</tr>
<tr class="table-info">...</tr>
<tr class="table-light">...</tr>
<tr class="table-dark">...</tr>
<!-- On cells (`td` or `th`) -->
<tr>
<td class="table-primary">...</td>
<td class="table-secondary">...</td>
<td class="table-success">...</td>
<td class="table-danger">...</td>
<td class="table-warning">...</td>
<td class="table-info">...</td>
<td class="table-light">...</td>
<td class="table-dark">...</td>
</tr>
         
        
          向使用辅助技术的用户传达用意
          使用颜色添加含义仅提供视觉指示,而不会传达给辅助技术的用户(例如屏幕阅读器)。 确保用颜色表示的信息在内容本身上是显而易见的(例如,可见文本),或者是通过其他方式包括的,例如用
            .visually-hidden 隐藏的类隐藏的其他文本。
          
         
        着重突出的表
        条纹状的行
        使用 .table-striped 将条纹添加到 <tbody>中的任何表行。
        
          
            
              
                | # | 
                First | 
                Last | 
                Handle | 
              
            
            
              
                | 1 | 
                Mark | 
                Otto | 
                @mdo | 
              
              
                | 2 | 
                Jacob | 
                Thornton | 
                @fat | 
              
              
                | 3 | 
                Larry the Bird | 
                @twitter | 
              
            
          
         
        
        
          <table class="table table-striped">
...
</table>
         
        这些类也可以添加到表变量中:
        
          
            
              
                | # | 
                First | 
                Last | 
                Handle | 
              
            
            
              
                | 1 | 
                Mark | 
                Otto | 
                @mdo | 
              
              
                | 2 | 
                Jacob | 
                Thornton | 
                @fat | 
              
              
                | 3 | 
                Larry the Bird | 
                @twitter | 
              
            
          
         
        
        
          <table class="table table-dark table-striped">
...
</table>
         
        
          
            
              
                | # | 
                First | 
                Last | 
                Handle | 
              
            
            
              
                | 1 | 
                Mark | 
                Otto | 
                @mdo | 
              
              
                | 2 | 
                Jacob | 
                Thornton | 
                @fat | 
              
              
                | 3 | 
                Larry the Bird | 
                @twitter | 
              
            
          
         
        
        
          <table class="table table-success table-striped">
...
</table>
         
        行悬停
        添加 .table-hover 以在 <tbody>中的表行上启用悬停状态。
        
          
            
              
                | # | 
                First | 
                Last | 
                Handle | 
              
            
            
              
                | 1 | 
                Mark | 
                Otto | 
                @mdo | 
              
              
                | 2 | 
                Jacob | 
                Thornton | 
                @fat | 
              
              
                | 3 | 
                Larry the Bird | 
                @twitter | 
              
            
          
         
        
        
          <table class="table table-hover">
...
</table>
         
        
          
            
              
                | # | 
                First | 
                Last | 
                Handle | 
              
            
            
              
                | 1 | 
                Mark | 
                Otto | 
                @mdo | 
              
              
                | 2 | 
                Jacob | 
                Thornton | 
                @fat | 
              
              
                | 3 | 
                Larry the Bird | 
                @twitter | 
              
            
          
         
        
        
          <table class="table table-dark table-hover">
...
</table>
         
        这些可悬停行还可以与条纹变量组合:
        
          
            
              
                | # | 
                First | 
                Last | 
                Handle | 
              
            
            
              
                | 1 | 
                Mark | 
                Otto | 
                @mdo | 
              
              
                | 2 | 
                Jacob | 
                Thornton | 
                @fat | 
              
              
                | 3 | 
                Larry the Bird | 
                @twitter | 
              
            
          
         
        
        
          <table class="table table-striped table-hover">
...
</table>
         
        突出显示表
        通过添加 .table-active 突出显示表格行或单元格。
        
          
            
              
                | # | 
                First | 
                Last | 
                Handle | 
              
            
            
              
                | 1 | 
                Mark | 
                Otto | 
                @mdo | 
              
              
                | 2 | 
                Jacob | 
                Thornton | 
                @fat | 
              
              
                | 3 | 
                Larry the Bird | 
                @twitter | 
              
            
          
         
        
        
          <table class="table">
<thead>
...
</thead>
<tbody>
<tr class="table-active">
  ...
</tr>
<tr>
  ...
</tr>
<tr>
  <th scope="row">3</th>
  <td colspan="2" class="table-active">Larry the Bird</td>
  <td>@twitter</td>
</tr>
</tbody>
</table>
         
        
          
            
              
                | # | 
                First | 
                Last | 
                Handle | 
              
            
            
              
                | 1 | 
                Mark | 
                Otto | 
                @mdo | 
              
              
                | 2 | 
                Jacob | 
                Thornton | 
                @fat | 
              
              
                | 3 | 
                Larry the Bird | 
                @twitter | 
              
            
          
         
        
        
          <table class="table table-dark">
<thead>
...
</thead>
<tbody>
<tr class="table-active">
  ...
</tr>
<tr>
  ...
</tr>
<tr>
  <th scope="row">3</th>
  <td colspan="2" class="table-active">Larry the Bird</td>
  <td>@twitter</td>
</tr>
</tbody>
</table>
         
        变量表和着重突出的表是如何工作的?
        对于着重突出的表(条纹行、行悬停和 突出显示表),我们使用了一些技术,使这些效果对所有 表变量 起作用:
        
          - 我们首先使用 
--bs-table-bg 自定义属性设置表格单元格的背景。 然后,所有表变体都设置该自定义属性以使表单元格着色。
            这样,如果将半透明的颜色用作表格背景,我们就不用那么麻烦。 
          - 
            然后我们在带有背景图像的表格单元格上添加一个渐变:
background-image: linear-gradient(var(--bs-table-accent-bg), var(--bs-table-accent-bg));
            可以在任何指定的 background-color上分层。 由于默认情况下 --bs-table-accent-bg
            是透明的,因此默认情况下我们具有不可见的透明线性渐变。 
          - 当添加 
.table-striped, .table-hover或 .table-active
            类时,--bs-table-accent-bg 设置为半透明颜色以使背景着色。 
          - 对于每个表格变体,我们生成 
--bs-table-accent-bg 颜色,该颜色具有最高的对比度,具体取决于该颜色。 例如,.table-primary
            的强调色较深,而 .table-dark 的强调色较浅。 
          - 文本和边框颜色的生成方式相同,默认情况下会继承其颜色。
 
        
        它背后是这样运行的:
        
        
          @mixin table-variant($state, $background) {
.table-#{$state} {
$color: color-contrast(opaque($body-bg, $background));
$hover-bg: mix($color, $background, percentage($table-hover-bg-factor));
$striped-bg: mix($color, $background, percentage($table-striped-bg-factor));
$active-bg: mix($color, $background, percentage($table-active-bg-factor));
--#{$variable-prefix}table-bg: #{$background};
--#{$variable-prefix}table-striped-bg: #{$striped-bg};
--#{$variable-prefix}table-striped-color: #{color-contrast($striped-bg)};
--#{$variable-prefix}table-active-bg: #{$active-bg};
--#{$variable-prefix}table-active-color: #{color-contrast($active-bg)};
--#{$variable-prefix}table-hover-bg: #{$hover-bg};
--#{$variable-prefix}table-hover-color: #{color-contrast($hover-bg)};
color: $color;
border-color: mix($color, $background, percentage($table-border-factor));
}
}
         
        表格边框
        带边框的表格
        在表格和单元格的所有边上添加 .table-bordered。
        
          
            
              
                | # | 
                First | 
                Last | 
                Handle | 
              
            
            
              
                | 1 | 
                Mark | 
                Otto | 
                @mdo | 
              
              
                | 2 | 
                Jacob | 
                Thornton | 
                @fat | 
              
              
                | 3 | 
                Larry the Bird | 
                @twitter | 
              
            
          
         
        
        
          <table class="table table-bordered">
...
</table>
         
        可以添加边框颜色工具来更改颜色:
        
          
            
              
                | # | 
                First | 
                Last | 
                Handle | 
              
            
            
              
                | 1 | 
                Mark | 
                Otto | 
                @mdo | 
              
              
                | 2 | 
                Jacob | 
                Thornton | 
                @fat | 
              
              
                | 3 | 
                Larry the Bird | 
                @twitter | 
              
            
          
         
        
        
          <table class="table table-bordered border-primary">
...
</table>
         
        无边框
        为没有边框的表格添加 .table-borderless 。
        
          
            
              
                | # | 
                First | 
                Last | 
                Handle | 
              
            
            
              
                | 1 | 
                Mark | 
                Otto | 
                @mdo | 
              
              
                | 2 | 
                Jacob | 
                Thornton | 
                @fat | 
              
              
                | 3 | 
                Larry the Bird | 
                @twitter | 
              
            
          
         
        
        
          <table class="table table-borderless">
...
</table>
         
        
          
            
              
                | # | 
                First | 
                Last | 
                Handle | 
              
            
            
              
                | 1 | 
                Mark | 
                Otto | 
                @mdo | 
              
              
                | 2 | 
                Jacob | 
                Thornton | 
                @fat | 
              
              
                | 3 | 
                Larry the Bird | 
                @twitter | 
              
            
          
         
        
        
          <table class="table table-dark table-borderless">
...
</table>
         
        紧缩表格
        添加 .table-sm ,将所有单元格 padding 减半,使任何 .table 更紧凑。
        
          
            
              
                | # | 
                First | 
                Last | 
                Handle | 
              
            
            
              
                | 1 | 
                Mark | 
                Otto | 
                @mdo | 
              
              
                | 2 | 
                Jacob | 
                Thornton | 
                @fat | 
              
              
                | 3 | 
                Larry the Bird | 
                @twitter | 
              
            
          
         
        
        
          <table class="table table-sm">
...
</table>
         
        
          
            
              
                | # | 
                First | 
                Last | 
                Handle | 
              
            
            
              
                | 1 | 
                Mark | 
                Otto | 
                @mdo | 
              
              
                | 2 | 
                Jacob | 
                Thornton | 
                @fat | 
              
              
                | 3 | 
                Larry the Bird | 
                @twitter | 
              
            
          
         
        
        
          <table class="table table-dark table-sm">
...
</table>
         
        内容垂直对齐
         <thead> 的表格单元格始终垂直与底部对齐。<tbody> 中的表格单元格从 <Table>
          继承对齐方式,默认情况下与顶部对齐。使用 垂直对齐 在需要时重新对齐。
        
          
            
              
                
                  | Heading 1 | 
                  Heading 2 | 
                  Heading 3 | 
                  Heading 4 | 
                
              
              
                
                  This cell inherits vertical-align: middle; from the table | 
                  This cell inherits vertical-align: middle; from the table | 
                  This cell inherits vertical-align: middle; from the table | 
                  Nulla vitae elit libero, a pharetra augue. Cras mattis consectetur purus sit amet fermentum.
                    Vestibulum id ligula porta felis euismod semper. | 
                
                
                  This cell inherits vertical-align: bottom; from the table row | 
                  This cell inherits vertical-align: bottom; from the table row | 
                  This cell inherits vertical-align: bottom; from the table row | 
                  Nulla vitae elit libero, a pharetra augue. Cras mattis consectetur purus sit amet fermentum.
                    Vestibulum id ligula porta felis euismod semper. | 
                
                
                  This cell inherits vertical-align: middle; from the table | 
                  This cell inherits vertical-align: middle; from the table | 
                  This cell is aligned to the top. | 
                  Nulla vitae elit libero, a pharetra augue. Cras mattis consectetur purus sit amet fermentum.
                    Vestibulum id ligula porta felis euismod semper. | 
                
              
            
           
         
        
        
          <table class="table table-sm table-dark">
<div class="table-responsive">
<table class="table align-middle">
  <thead>
    <tr>
      ...
    </tr>
  </thead>
  <tbody>
    <tr>
      ...
    </tr>
    <tr class="align-bottom">
      ...
    </tr>
    <tr>
      <td>...</td>
      <td>...</td>
      <td class="align-top">This cell is aligned to the top.</td>
      <td>...</td>
    </tr>
  </tbody>
</table>
</div>
</table>
         
        嵌套
        
        嵌套表不会继承边框样式、活动样式和表量。
        
          
            
              
                | # | 
                First | 
                Last | 
                Handle | 
              
            
            
              
                | 1 | 
                Mark | 
                Otto | 
                @mdo | 
              
              
                
                  
                    
                      
                        | Header | 
                        Header | 
                        Header | 
                       
                    
                    
                      
                        | A | 
                        First | 
                        Last | 
                       
                      
                        | B | 
                        First | 
                        Last | 
                       
                      
                        | C | 
                        First | 
                        Last | 
                       
                    
                   
                 | 
              
              
                | 3 | 
                Larry | 
                the Bird | 
                @twitter | 
              
            
          
         
        
        
          <table class="table table-striped">
<thead>
...
</thead>
<tbody>
...
<tr>
  <td colspan="4">
    <table class="table mb-0">
      ...
    </table>
  </td>
</tr>
...
</tbody>
</table>
         
        它是如何嵌套的
        为了防止任何 样式泄漏到嵌套表,我们在CSS中使用子组合器(>)选择器。 由于我们需要针对 thead,
          tbody和 tfoot中的所有 td 和 th ,因此如果没有它,我们的选择器将显得很长。
          因此,使用了看起来比较奇特的 .table > :not(caption) > * > * 选择器来定位
          .table的所有td 和 th,但没有潜在的嵌套表。
        
        请注意,如果将 <tr> 添加为表的直接子级,则默认情况下,这些 <tr> 将包装在 <tbody>
          中,从而使我们的选择器正常工作。
        结构组成
        
        表头
        与表和深色的表类似,使用修饰符类 .table-light 或 .table-dark 使 <thead> 显得浅灰色或深灰色。
        
        
          
            
              
                | # | 
                First | 
                Last | 
                Handle | 
              
            
            
              
                | 1 | 
                Mark | 
                Otto | 
                @mdo | 
              
              
                | 2 | 
                Jacob | 
                Thornton | 
                @fat | 
              
              
                | 3 | 
                Larry | 
                the Bird | 
                @twitter | 
              
            
          
         
        
        
          <table class="table">
<thead class="table-light">
...
</thead>
<tbody>
...
</tbody>
</table>
         
        
          
            
              
                | # | 
                First | 
                Last | 
                Handle | 
              
            
            
              
                | 1 | 
                Mark | 
                Otto | 
                @mdo | 
              
              
                | 2 | 
                Jacob | 
                Thornton | 
                @fat | 
              
              
                | 3 | 
                Larry | 
                the Bird | 
                @twitter | 
              
            
          
         
        
        
          <table class="table">
<thead class="table-dark">
...
</thead>
<tbody>
...
</tbody>
</table>
         
        
        
          
            
              
                | # | 
                First | 
                Last | 
                Handle | 
              
            
            
              
                | 1 | 
                Mark | 
                Otto | 
                @mdo | 
              
              
                | 2 | 
                Jacob | 
                Thornton | 
                @fat | 
              
              
                | 3 | 
                Larry | 
                the Bird | 
                @twitter | 
              
            
            
              
                | Footer | 
                Footer | 
                Footer | 
                Footer | 
              
            
          
         
        
        
          <table class="table">
<thead>
...
</thead>
<tbody>
...
</tbody>
<tfoot>
...
</tfoot>
</table>
         
        标题
        
        <caption> 的功能类似于表的标题。 它可以帮助具有屏幕阅读器的用户查找表格并了解表格内容,并决定是否要读取表格。
        
          
            List of users
            
              
                | # | 
                First | 
                Last | 
                Handle | 
              
            
            
              
                | 1 | 
                Mark | 
                Otto | 
                @mdo | 
              
              
                | 2 | 
                Jacob | 
                Thornton | 
                @fat | 
              
              
                | 3 | 
                Larry the Bird | 
                @twitter | 
              
            
          
         
        
        
          <table class="table table-sm">
<caption>List of users</caption>
<thead>
...
</thead>
<tbody>
...
</tbody>
</table>
         
        你也可以使用 <caption> 将 .caption-top放在表格的顶部。
        
          
            List of users
            
              
                | # | 
                First | 
                Last | 
                Handle | 
              
            
            
              
                | 1 | 
                Mark | 
                Otto | 
                @mdo | 
              
              
                | 2 | 
                Jacob | 
                Thornton | 
                @fat | 
              
              
                | 3 | 
                Larry | 
                the Bird | 
                @twitter | 
              
            
          
         
        
        
          <table class="table caption-top">
<caption>List of users</caption>
<thead>
<tr>
  <th scope="col">#</th>
  <th scope="col">First</th>
  <th scope="col">Last</th>
  <th scope="col">Handle</th>
</tr>
</thead>
<tbody>
<tr>
  <th scope="row">1</th>
  <td>Mark</td>
  <td>Otto</td>
  <td>@mdo</td>
</tr>
<tr>
  <th scope="row">2</th>
  <td>Jacob</td>
  <td>Thornton</td>
  <td>@fat</td>
</tr>
<tr>
  <th scope="row">3</th>
  <td>Larry</td>
  <td>the Bird</td>
  <td>@twitter</td>
</tr>
</tbody>
</table>
         
        响应式表格
        响应式表格允许水平滚动。通过将 .table 包装成 .table-responsive,使任何表跨所有视图响应。或者,通过使用
          .table-responsive{-sm|-md|-lg|-xl|-xxl}选择一个最大断点,使其具有响应式功能。
        
        
          垂直裁剪/截断
          响应式表格利用了 overflow-y: hidden,它可以截取任何超出表格底部或顶部边缘的内容。特别是,这可以切断下拉菜单和其他第三方小部件。
          
         
        始终响应
        在每个断点处,将 .table-responsive 用于水平滚动表。
        
          
            
              
                
                  | # | 
                  Heading | 
                  Heading | 
                  Heading | 
                  Heading | 
                  Heading | 
                  Heading | 
                  Heading | 
                  Heading | 
                  Heading | 
                
              
              
                
                  | 1 | 
                  Cell | 
                  Cell | 
                  Cell | 
                  Cell | 
                  Cell | 
                  Cell | 
                  Cell | 
                  Cell | 
                  Cell | 
                
                
                  | 2 | 
                  Cell | 
                  Cell | 
                  Cell | 
                  Cell | 
                  Cell | 
                  Cell | 
                  Cell | 
                  Cell | 
                  Cell | 
                
                
                  | 3 | 
                  Cell | 
                  Cell | 
                  Cell | 
                  Cell | 
                  Cell | 
                  Cell | 
                  Cell | 
                  Cell | 
                  Cell | 
                
              
            
           
         
        
        
          <div class="table-responsive">
<table class="table">
...
</table>
</div>
         
        特定于断点
        根据需要使用 .table-responsive{-sm|-md|-lg|-xl|-xxl} 创建直到特定断点的响应表。 从该断点开始,该表将正常运行并且不会水平滚动。
        这些表可能会坏掉,直到它们的响应样式应用于特定的屏幕宽度
        
          
            
              
                
                  | # | 
                  Heading | 
                  Heading | 
                  Heading | 
                  Heading | 
                  Heading | 
                  Heading | 
                  Heading | 
                  Heading | 
                
              
              
                
                  | 1 | 
                  Cell | 
                  Cell | 
                  Cell | 
                  Cell | 
                  Cell | 
                  Cell | 
                  Cell | 
                  Cell | 
                
                
                  | 2 | 
                  Cell | 
                  Cell | 
                  Cell | 
                  Cell | 
                  Cell | 
                  Cell | 
                  Cell | 
                  Cell | 
                
                
                  | 3 | 
                  Cell | 
                  Cell | 
                  Cell | 
                  Cell | 
                  Cell | 
                  Cell | 
                  Cell | 
                  Cell | 
                
              
            
           
         
        
          
            
              
                
                  | # | 
                  Heading | 
                  Heading | 
                  Heading | 
                  Heading | 
                  Heading | 
                  Heading | 
                  Heading | 
                  Heading | 
                
              
              
                
                  | 1 | 
                  Cell | 
                  Cell | 
                  Cell | 
                  Cell | 
                  Cell | 
                  Cell | 
                  Cell | 
                  Cell | 
                
                
                  | 2 | 
                  Cell | 
                  Cell | 
                  Cell | 
                  Cell | 
                  Cell | 
                  Cell | 
                  Cell | 
                  Cell | 
                
                
                  | 3 | 
                  Cell | 
                  Cell | 
                  Cell | 
                  Cell | 
                  Cell | 
                  Cell | 
                  Cell | 
                  Cell | 
                
              
            
           
         
        
          
            
              
                
                  | # | 
                  Heading | 
                  Heading | 
                  Heading | 
                  Heading | 
                  Heading | 
                  Heading | 
                  Heading | 
                  Heading | 
                
              
              
                
                  | 1 | 
                  Cell | 
                  Cell | 
                  Cell | 
                  Cell | 
                  Cell | 
                  Cell | 
                  Cell | 
                  Cell | 
                
                
                  | 2 | 
                  Cell | 
                  Cell | 
                  Cell | 
                  Cell | 
                  Cell | 
                  Cell | 
                  Cell | 
                  Cell | 
                
                
                  | 3 | 
                  Cell | 
                  Cell | 
                  Cell | 
                  Cell | 
                  Cell | 
                  Cell | 
                  Cell | 
                  Cell | 
                
              
            
           
         
        
          
            
              
                
                  | # | 
                  Heading | 
                  Heading | 
                  Heading | 
                  Heading | 
                  Heading | 
                  Heading | 
                  Heading | 
                  Heading | 
                
              
              
                
                  | 1 | 
                  Cell | 
                  Cell | 
                  Cell | 
                  Cell | 
                  Cell | 
                  Cell | 
                  Cell | 
                  Cell | 
                
                
                  | 2 | 
                  Cell | 
                  Cell | 
                  Cell | 
                  Cell | 
                  Cell | 
                  Cell | 
                  Cell | 
                  Cell | 
                
                
                  | 3 | 
                  Cell | 
                  Cell | 
                  Cell | 
                  Cell | 
                  Cell | 
                  Cell | 
                  Cell | 
                  Cell | 
                
              
            
           
         
        
          
            
              
                
                  | # | 
                  Heading | 
                  Heading | 
                  Heading | 
                  Heading | 
                  Heading | 
                  Heading | 
                  Heading | 
                  Heading | 
                
              
              
                
                  | 1 | 
                  Cell | 
                  Cell | 
                  Cell | 
                  Cell | 
                  Cell | 
                  Cell | 
                  Cell | 
                  Cell | 
                
                
                  | 2 | 
                  Cell | 
                  Cell | 
                  Cell | 
                  Cell | 
                  Cell | 
                  Cell | 
                  Cell | 
                  Cell | 
                
                
                  | 3 | 
                  Cell | 
                  Cell | 
                  Cell | 
                  Cell | 
                  Cell | 
                  Cell | 
                  Cell | 
                  Cell | 
                
              
            
           
         
        
          
            
              
                
                  | # | 
                  Heading | 
                  Heading | 
                  Heading | 
                  Heading | 
                  Heading | 
                  Heading | 
                  Heading | 
                  Heading | 
                
              
              
                
                  | 1 | 
                  Cell | 
                  Cell | 
                  Cell | 
                  Cell | 
                  Cell | 
                  Cell | 
                  Cell | 
                  Cell | 
                
                
                  | 2 | 
                  Cell | 
                  Cell | 
                  Cell | 
                  Cell | 
                  Cell | 
                  Cell | 
                  Cell | 
                  Cell | 
                
                
                  | 3 | 
                  Cell | 
                  Cell | 
                  Cell | 
                  Cell | 
                  Cell | 
                  Cell | 
                  Cell | 
                  Cell | 
                
              
            
           
         
        
        
          <div class="table-responsive">
<table class="table">
...
</table>
</div>
<div class="table-responsive-sm">
<table class="table">
...
</table>
</div>
<div class="table-responsive-md">
<table class="table">
...
</table>
</div>
<div class="table-responsive-lg">
<table class="table">
...
</table>
</div>
<div class="table-responsive-xl">
<table class="table">
...
</table>
</div>
<div class="table-responsive-xxl">
<table class="table">
...
</table>
</div>
         
        在Sass中定义
        
          - 因子变量 
$table-stripeated-bg-factor, $table-active-bg-factor 和 $table-hoverated-bg-factor
            用于确定表变量之间的对比。 
          - 除了浅色和深色的表格变体之外,主题颜色还通过 
$table bg level 变量来点亮。 
        
        
        
          $table-cell-padding-y:        .5rem;
$table-cell-padding-x:        .5rem;
$table-cell-padding-y-sm:     .25rem;
$table-cell-padding-x-sm:     .25rem;
$table-cell-vertical-align:   top;
$table-color:                 $body-color;
$table-bg:                    transparent;
$table-th-font-weight:        null;
$table-striped-color:         $table-color;
$table-striped-bg-factor:     .05;
$table-striped-bg:            rgba($black, $table-striped-bg-factor);
$table-active-color:          $table-color;
$table-active-bg-factor:      .1;
$table-active-bg:             rgba($black, $table-active-bg-factor);
$table-hover-color:           $table-color;
$table-hover-bg-factor:       .075;
$table-hover-bg:              rgba($black, $table-hover-bg-factor);
$table-border-factor:         .1;
$table-border-width:          $border-width;
$table-border-color:          $border-color;
$table-striped-order:         odd;
$table-group-separator-color: currentColor;
$table-caption-color:         $text-muted;
$table-bg-scale:              -80%;
$table-variants: (
"primary":    shift-color($primary, $table-bg-scale),
"secondary":  shift-color($secondary, $table-bg-scale),
"success":    shift-color($success, $table-bg-scale),
"info":       shift-color($info, $table-bg-scale),
"warning":    shift-color($warning, $table-bg-scale),
"danger":     shift-color($danger, $table-bg-scale),
"light":      $light,
"dark":       $dark,
);