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卡片（Cards）

Bootstrap的卡提供了一个灵活的、可扩展的内容容器，其中包含多种变体和选项。

关于

卡片（card） 是一种灵活且可扩展的内容容器。它包括页眉和页脚选项、各种内容、上下文背景颜色和强大的显示选项。如果您熟悉Bootstrap 3，那么卡片将取代我们的旧面板、孔和缩略图。类似于这些组件的功能可以作为卡片的修改器类使用。

示例

卡片是用尽可能少的标记和样式构建的，但是仍然能够提供大量的控制和定制。与flexbox建立，他们提供了容易的调整和混合以及与其他引导组件。默认情况下，它们没有margin ，因此根据需要使用 间距工具。

下面是一个混合内容和固定宽度的基本卡片示例。卡片没有固定的宽度来开始，所以它们自然会填满其父元素的整个宽度。这是很容易定制与我们的各种尺寸选择。

PlaceholderImage cap
Card title

Some quick example text to build on the card title and make up the bulk of the card's content.

Go somewhere 
<div class="card" style="width: 18rem;">
  <img src="..." class="card-img-top" alt="...">
  <div class="card-body">
    <h5 class="card-title">Card title</h5>
    <p class="card-text">Some quick example text to build on the card title and make up the bulk of the card's content.</p>
    <a href="#" class="btn btn-primary">Go somewhere</a>
  </div>
</div>

内容类型

卡片支持多种内容，包括图像、文本、列表组、链接等。下面是支持的示例。

Body

卡片的构造块是 .card-body。当你需要卡片中的填充部分时就使用它。

This is some text within a card body. 
<div class="card">
  <div class="card-body">
    This is some text within a card body.
  </div>
</div>

标题、文本和链接

卡片标题通过将 .card-title 添加到 <h*>标记来使用。以同样的方式，通过将 .card-link 添加到 <a> 标记，可以添加链接并将其相邻放置。

字幕通过向<h*> 标记添加 .card-subtitle来使用。如果.card-title 和 .card-subtitle 项放置在.card-body 项中，则卡片标题和副标题将对齐。

Card title
Card subtitle

Some quick example text to build on the card title and make up the bulk of the card's content.

Card link Another link 
<div class="card" style="width: 18rem;">
  <div class="card-body">
    <h5 class="card-title">Card title</h5>
    <h6 class="card-subtitle mb-2 text-muted">Card subtitle</h6>
    <p class="card-text">Some quick example text to build on the card title and make up the bulk of the card's content.</p>
    <a href="#" class="card-link">Card link</a>
    <a href="#" class="card-link">Another link</a>
  </div>
</div>

图像

.card-img-top 将图像放置在卡的顶部。使用 .card-text，可以将文本添加到卡中。.card-text 中的文本也可以用标准的HTML标记设置样式。

PlaceholderImage cap

Some quick example text to build on the card title and make up the bulk of the card's content.

<div class="card" style="width: 18rem;">
  <img src="..." class="card-img-top" alt="...">
  <div class="card-body">
    <p class="card-text">Some quick example text to build on the card title and make up the bulk of the card's content.</p>
  </div>
</div>

列表组

在具有刷新列表组的卡中创建内容列表。

  • An item
  • A second item
  • A third item
<div class="card" style="width: 18rem;">
  <ul class="list-group list-group-flush">
    <li class="list-group-item">An item</li>
    <li class="list-group-item">A second item</li>
    <li class="list-group-item">A third item</li>
  </ul>
</div>
Featured
  • An item
  • A second item
  • A third item
<div class="card" style="width: 18rem;">
  <div class="card-header">
    Featured
  </div>
  <ul class="list-group list-group-flush">
    <li class="list-group-item">An item</li>
    <li class="list-group-item">A second item</li>
    <li class="list-group-item">A third item</li>
  </ul>
</div>
  • An item
  • A second item
  • A third item
Card footer 
<div class="card" style="width: 18rem;">
  <ul class="list-group list-group-flush">
    <li class="list-group-item">An item</li>
    <li class="list-group-item">A second item</li>
    <li class="list-group-item">A third item</li>
  </ul>
  <div class="card-footer">
    Card footer
  </div>
</div>

Kitchen sink

混合和匹配多种内容类型以创建所需的卡片，或将所有内容都放在其中。下面显示的是图像样式、块、文本样式和列表组，所有这些都包装在固定宽度的卡片中。

PlaceholderImage cap
Card title

Some quick example text to build on the card title and make up the bulk of the card's content.

  • An item
  • A second item
  • A third item
Card link Another link 
<div class="card" style="width: 18rem;">
  <img src="..." class="card-img-top" alt="...">
  <div class="card-body">
    <h5 class="card-title">Card title</h5>
    <p class="card-text">Some quick example text to build on the card title and make up the bulk of the card's content.</p>
  </div>
  <ul class="list-group list-group-flush">
    <li class="list-group-item">An item</li>
    <li class="list-group-item">A second item</li>
    <li class="list-group-item">A third item</li>
  </ul>
  <div class="card-body">
    <a href="#" class="card-link">Card link</a>
    <a href="#" class="card-link">Another link</a>
  </div>
</div>

在卡片中添加可选的页眉和/或页脚。

Featured
Special title treatment

With supporting text below as a natural lead-in to additional content.

Go somewhere 
<div class="card">
  <div class="card-header">
    Featured
  </div>
  <div class="card-body">
    <h5 class="card-title">Special title treatment</h5>
    <p class="card-text">With supporting text below as a natural lead-in to additional content.</p>
    <a href="#" class="btn btn-primary">Go somewhere</a>
  </div>
</div>

可以通过将.card-header 添加到 <h*> 元素来设置卡头的样式。

Featured
Special title treatment

With supporting text below as a natural lead-in to additional content.

Go somewhere 
<div class="card">
  <h5 class="card-header">Featured</h5>
  <div class="card-body">
    <h5 class="card-title">Special title treatment</h5>
    <p class="card-text">With supporting text below as a natural lead-in to additional content.</p>
    <a href="#" class="btn btn-primary">Go somewhere</a>
  </div>
</div>
Quote

A well-known quote, contained in a blockquote element.

Someone famous in Source Title
<div class="card">
  <div class="card-header">
    Quote
  </div>
  <div class="card-body">
    <blockquote class="blockquote mb-0">
      <p>A well-known quote, contained in a blockquote element.</p>
      <footer class="blockquote-footer">Someone famous in <cite title="Source Title">Source Title</cite></footer>
    </blockquote>
  </div>
</div>
Featured
Special title treatment

With supporting text below as a natural lead-in to additional content.

Go somewhere
2 days ago 
<div class="card text-center">
  <div class="card-header">
    Featured
  </div>
  <div class="card-body">
    <h5 class="card-title">Special title treatment</h5>
    <p class="card-text">With supporting text below as a natural lead-in to additional content.</p>
    <a href="#" class="btn btn-primary">Go somewhere</a>
  </div>
  <div class="card-footer text-muted">
    2 days ago
  </div>
</div>

调整大小

卡片开始时没有特定的 width ，所以除非另有说明，它们将是100%宽。您可以根据需要使用自定义CSS、网格类、网格Sass mixin或实用程序来更改此设置。

使用网格标记

使用网格，根据需要在列和行中包装卡片。

Special title treatment

With supporting text below as a natural lead-in to additional content.

Go somewhere
Special title treatment

With supporting text below as a natural lead-in to additional content.

Go somewhere 
<div class="row">
  <div class="col-sm-6">
    <div class="card">
      <div class="card-body">
        <h5 class="card-title">Special title treatment</h5>
        <p class="card-text">With supporting text below as a natural lead-in to additional content.</p>
        <a href="#" class="btn btn-primary">Go somewhere</a>
      </div>
    </div>
  </div>
  <div class="col-sm-6">
    <div class="card">
      <div class="card-body">
        <h5 class="card-title">Special title treatment</h5>
        <p class="card-text">With supporting text below as a natural lead-in to additional content.</p>
        <a href="#" class="btn btn-primary">Go somewhere</a>
      </div>
    </div>
  </div>
</div>

使用实用程序

使用我们为数不多的 可用大小调整工具 来快速设置卡片的宽度。

Card title

With supporting text below as a natural lead-in to additional content.

Button
Card title

With supporting text below as a natural lead-in to additional content.

Button 
<div class="card w-75">
  <div class="card-body">
    <h5 class="card-title">Card title</h5>
    <p class="card-text">With supporting text below as a natural lead-in to additional content.</p>
    <a href="#" class="btn btn-primary">Button</a>
  </div>
</div>

<div class="card w-50">
  <div class="card-body">
    <h5 class="card-title">Card title</h5>
    <p class="card-text">With supporting text below as a natural lead-in to additional content.</p>
    <a href="#" class="btn btn-primary">Button</a>
  </div>
</div>

使用自定义CSS

在样式表中使用自定义CSS或作为内联样式来设置宽度。

Special title treatment

With supporting text below as a natural lead-in to additional content.

Go somewhere 
<div class="card" style="width: 18rem;">
  <div class="card-body">
    <h5 class="card-title">Special title treatment</h5>
    <p class="card-text">With supporting text below as a natural lead-in to additional content.</p>
    <a href="#" class="btn btn-primary">Go somewhere</a>
  </div>
</div>

文本对齐方式

您可以使用我们的 文本对齐类快速更改任何卡片的整体或特定部分的文本对齐方式。

Special title treatment

With supporting text below as a natural lead-in to additional content.

Go somewhere
Special title treatment

With supporting text below as a natural lead-in to additional content.

Go somewhere
Special title treatment

With supporting text below as a natural lead-in to additional content.

Go somewhere 
<div class="card" style="width: 18rem;">
  <div class="card-body">
    <h5 class="card-title">Special title treatment</h5>
    <p class="card-text">With supporting text below as a natural lead-in to additional content.</p>
    <a href="#" class="btn btn-primary">Go somewhere</a>
  </div>
</div>

<div class="card text-center" style="width: 18rem;">
  <div class="card-body">
    <h5 class="card-title">Special title treatment</h5>
    <p class="card-text">With supporting text below as a natural lead-in to additional content.</p>
    <a href="#" class="btn btn-primary">Go somewhere</a>
  </div>
</div>

<div class="card text-right" style="width: 18rem;">
  <div class="card-body">
    <h5 class="card-title">Special title treatment</h5>
    <p class="card-text">With supporting text below as a natural lead-in to additional content.</p>
    <a href="#" class="btn btn-primary">Go somewhere</a>
  </div>
</div>

使用 Bootstrap 的 导航组件添加一些导航卡的标题（或块）。

Special title treatment

With supporting text below as a natural lead-in to additional content.

Go somewhere 
<div class="card text-center">
  <div class="card-header">
    <ul class="nav nav-tabs card-header-tabs">
      <li class="nav-item">
        <a class="nav-link active" href="#">Active</a>
      </li>
      <li class="nav-item">
        <a class="nav-link" href="#">Link</a>
      </li>
      <li class="nav-item">
        <a class="nav-link disabled" href="#" tabindex="-1" aria-disabled="true">Disabled</a>
      </li>
    </ul>
  </div>
  <div class="card-body">
    <h5 class="card-title">Special title treatment</h5>
    <p class="card-text">With supporting text below as a natural lead-in to additional content.</p>
    <a href="#" class="btn btn-primary">Go somewhere</a>
  </div>
</div>
Special title treatment

With supporting text below as a natural lead-in to additional content.

Go somewhere 
<div class="card text-center">
  <div class="card-header">
    <ul class="nav nav-pills card-header-pills">
      <li class="nav-item">
        <a class="nav-link active" href="#">Active</a>
      </li>
      <li class="nav-item">
        <a class="nav-link" href="#">Link</a>
      </li>
      <li class="nav-item">
        <a class="nav-link disabled" href="#" tabindex="-1" aria-disabled="true">Disabled</a>
      </li>
    </ul>
  </div>
  <div class="card-body">
    <h5 class="card-title">Special title treatment</h5>
    <p class="card-text">With supporting text below as a natural lead-in to additional content.</p>
    <a href="#" class="btn btn-primary">Go somewhere</a>
  </div>
</div>

图像

卡片包括一些处理图像的选项。可以选择在卡片的两端附加“图像封顶”，将图像与卡片内容叠加，或者简单地将图像嵌入卡片中。

图像帽

与页眉和页脚类似，卡片可以包括顶部和底部的“图像帽”——卡片顶部或底部的图像。

PlaceholderImage cap
Card title

This is a wider card with supporting text below as a natural lead-in to additional content. This content is a little bit longer.

Last updated 3 mins ago

Card title

This is a wider card with supporting text below as a natural lead-in to additional content. This content is a little bit longer.

Last updated 3 mins ago

PlaceholderImage cap 
<div class="card mb-3">
  <img src="..." class="card-img-top" alt="...">
  <div class="card-body">
    <h5 class="card-title">Card title</h5>
    <p class="card-text">This is a wider card with supporting text below as a natural lead-in to additional content. This content is a little bit longer.</p>
    <p class="card-text"><small class="text-muted">Last updated 3 mins ago</small></p>
  </div>
</div>
<div class="card">
  <div class="card-body">
    <h5 class="card-title">Card title</h5>
    <p class="card-text">This is a wider card with supporting text below as a natural lead-in to additional content. This content is a little bit longer.</p>
    <p class="card-text"><small class="text-muted">Last updated 3 mins ago</small></p>
  </div>
  <img src="..." class="card-img-bottom" alt="...">
</div>

图像覆盖

将图像转换为卡片背景并覆盖卡片的文本。根据图像的不同，您可能需要也可能不需要其他样式或实用程序。

PlaceholderCard image
Card title

This is a wider card with supporting text below as a natural lead-in to additional content. This content is a little bit longer.

Last updated 3 mins ago

<div class="card bg-dark text-white">
  <img src="..." class="card-img" alt="...">
  <div class="card-img-overlay">
    <h5 class="card-title">Card title</h5>
    <p class="card-text">This is a wider card with supporting text below as a natural lead-in to additional content. This content is a little bit longer.</p>
    <p class="card-text">Last updated 3 mins ago</p>
  </div>
</div>
请注意，内容不应大于图像的高度。如果内容大于图像，则内容将显示在图像外部。

水平

使用网格和实用程序类的组合，卡片可以以移动友好且响应迅速的方式水平放置。在下面的示例中，我们删除了带有 .no-gutters 的网格槽，并使用 .col-md-* 类使卡片在 md 断点处水平。根据您的卡片内容，可能需要进一步调整。

PlaceholderImage
Card title

This is a wider card with supporting text below as a natural lead-in to additional content. This content is a little bit longer.

Last updated 3 mins ago

<div class="card mb-3" style="max-width: 540px;">
  <div class="row no-gutters">
    <div class="col-md-4">
      <img src="..." alt="...">
    </div>
    <div class="col-md-8">
      <div class="card-body">
        <h5 class="card-title">Card title</h5>
        <p class="card-text">This is a wider card with supporting text below as a natural lead-in to additional content. This content is a little bit longer.</p>
        <p class="card-text"><small class="text-muted">Last updated 3 mins ago</small></p>
      </div>
    </div>
  </div>
</div>

卡片样式

卡片包括各种定制背景、边框和颜色的选项。

背景和颜色

使用 文本和背景实用程序更改卡片的外观。

Header
Primary card title

Some quick example text to build on the card title and make up the bulk of the card's content.

Header
Secondary card title

Some quick example text to build on the card title and make up the bulk of the card's content.

Header
Success card title

Some quick example text to build on the card title and make up the bulk of the card's content.

Header
Danger card title

Some quick example text to build on the card title and make up the bulk of the card's content.

Header
Warning card title

Some quick example text to build on the card title and make up the bulk of the card's content.

Header
Info card title

Some quick example text to build on the card title and make up the bulk of the card's content.

Header
Light card title

Some quick example text to build on the card title and make up the bulk of the card's content.

Header
Dark card title

Some quick example text to build on the card title and make up the bulk of the card's content.

<div class="card text-white bg-primary mb-3" style="max-width: 18rem;">
  <div class="card-header">Header</div>
  <div class="card-body">
    <h5 class="card-title">Primary card title</h5>
    <p class="card-text">Some quick example text to build on the card title and make up the bulk of the card's content.</p>
  </div>
</div>
<div class="card text-white bg-secondary mb-3" style="max-width: 18rem;">
  <div class="card-header">Header</div>
  <div class="card-body">
    <h5 class="card-title">Secondary card title</h5>
    <p class="card-text">Some quick example text to build on the card title and make up the bulk of the card's content.</p>
  </div>
</div>
<div class="card text-white bg-success mb-3" style="max-width: 18rem;">
  <div class="card-header">Header</div>
  <div class="card-body">
    <h5 class="card-title">Success card title</h5>
    <p class="card-text">Some quick example text to build on the card title and make up the bulk of the card's content.</p>
  </div>
</div>
<div class="card text-white bg-danger mb-3" style="max-width: 18rem;">
  <div class="card-header">Header</div>
  <div class="card-body">
    <h5 class="card-title">Danger card title</h5>
    <p class="card-text">Some quick example text to build on the card title and make up the bulk of the card's content.</p>
  </div>
</div>
<div class="card text-white bg-warning mb-3" style="max-width: 18rem;">
  <div class="card-header">Header</div>
  <div class="card-body">
    <h5 class="card-title">Warning card title</h5>
    <p class="card-text">Some quick example text to build on the card title and make up the bulk of the card's content.</p>
  </div>
</div>
<div class="card text-white bg-info mb-3" style="max-width: 18rem;">
  <div class="card-header">Header</div>
  <div class="card-body">
    <h5 class="card-title">Info card title</h5>
    <p class="card-text">Some quick example text to build on the card title and make up the bulk of the card's content.</p>
  </div>
</div>
<div class="card bg-light mb-3" style="max-width: 18rem;">
  <div class="card-header">Header</div>
  <div class="card-body">
    <h5 class="card-title">Light card title</h5>
    <p class="card-text">Some quick example text to build on the card title and make up the bulk of the card's content.</p>
  </div>
</div>
<div class="card text-white bg-dark mb-3" style="max-width: 18rem;">
  <div class="card-header">Header</div>
  <div class="card-body">
    <h5 class="card-title">Dark card title</h5>
    <p class="card-text">Some quick example text to build on the card title and make up the bulk of the card's content.</p>
  </div>
</div>
向辅助技术传达意义

使用颜色添加意义只提供视觉指示，而视觉指示不会传达给辅助技术的用户，例如屏幕阅读器。确保颜色表示的信息从内容本身（例如可见文本）中明显，或者通过替代手段包括，例如仅用 .sr-only 隐藏的附加文本。

边框

使用 边框工具 只更改卡片的 border-color 。注意，您可以将 .text-{color} 类放在父 .card 或卡片内容的子集上，如下所示。

Header
Primary card title

Some quick example text to build on the card title and make up the bulk of the card's content.

Header
Secondary card title

Some quick example text to build on the card title and make up the bulk of the card's content.

Header
Success card title

Some quick example text to build on the card title and make up the bulk of the card's content.

Header
Danger card title

Some quick example text to build on the card title and make up the bulk of the card's content.

Header
Warning card title

Some quick example text to build on the card title and make up the bulk of the card's content.

Header
Info card title

Some quick example text to build on the card title and make up the bulk of the card's content.

Header
Light card title

Some quick example text to build on the card title and make up the bulk of the card's content.

Header
Dark card title

Some quick example text to build on the card title and make up the bulk of the card's content.

<div class="card border-primary mb-3" style="max-width: 18rem;">
  <div class="card-header">Header</div>
  <div class="card-body text-primary">
    <h5 class="card-title">Primary card title</h5>
    <p class="card-text">Some quick example text to build on the card title and make up the bulk of the card's content.</p>
  </div>
</div>
<div class="card border-secondary mb-3" style="max-width: 18rem;">
  <div class="card-header">Header</div>
  <div class="card-body text-secondary">
    <h5 class="card-title">Secondary card title</h5>
    <p class="card-text">Some quick example text to build on the card title and make up the bulk of the card's content.</p>
  </div>
</div>
<div class="card border-success mb-3" style="max-width: 18rem;">
  <div class="card-header">Header</div>
  <div class="card-body text-success">
    <h5 class="card-title">Success card title</h5>
    <p class="card-text">Some quick example text to build on the card title and make up the bulk of the card's content.</p>
  </div>
</div>
<div class="card border-danger mb-3" style="max-width: 18rem;">
  <div class="card-header">Header</div>
  <div class="card-body text-danger">
    <h5 class="card-title">Danger card title</h5>
    <p class="card-text">Some quick example text to build on the card title and make up the bulk of the card's content.</p>
  </div>
</div>
<div class="card border-warning mb-3" style="max-width: 18rem;">
  <div class="card-header">Header</div>
  <div class="card-body text-warning">
    <h5 class="card-title">Warning card title</h5>
    <p class="card-text">Some quick example text to build on the card title and make up the bulk of the card's content.</p>
  </div>
</div>
<div class="card border-info mb-3" style="max-width: 18rem;">
  <div class="card-header">Header</div>
  <div class="card-body text-info">
    <h5 class="card-title">Info card title</h5>
    <p class="card-text">Some quick example text to build on the card title and make up the bulk of the card's content.</p>
  </div>
</div>
<div class="card border-light mb-3" style="max-width: 18rem;">
  <div class="card-header">Header</div>
  <div class="card-body">
    <h5 class="card-title">Light card title</h5>
    <p class="card-text">Some quick example text to build on the card title and make up the bulk of the card's content.</p>
  </div>
</div>
<div class="card border-dark mb-3" style="max-width: 18rem;">
  <div class="card-header">Header</div>
  <div class="card-body text-dark">
    <h5 class="card-title">Dark card title</h5>
    <p class="card-text">Some quick example text to build on the card title and make up the bulk of the card's content.</p>
  </div>
</div>

Mixins 实用程序

您还可以根据需要更改卡片页眉和页脚上的边框，甚至可以使用.bg-transparent 删除它们的 background-color。

Header
Success card title

Some quick example text to build on the card title and make up the bulk of the card's content.

Footer
<div class="card border-success mb-3" style="max-width: 18rem;">
  <div class="card-header bg-transparent border-success">Header</div>
  <div class="card-body text-success">
    <h5 class="card-title">Success card title</h5>
    <p class="card-text">Some quick example text to build on the card title and make up the bulk of the card's content.</p>
  </div>
  <div class="card-footer bg-transparent border-success">Footer</div>
</div>

卡片布局

除了设计卡片中的内容之外，Bootstrap还包括一些布局卡片系列的选项。就目前而言， 这些布局选项还没有响应。

卡片组

使用卡片组将卡片呈现为具有相同宽度和高度列的单个附加元素。卡片组从堆叠开始，并使用 display: flex; 从 sm断点开始附着统一的尺寸。

PlaceholderImage cap
Card title

This is a wider card with supporting text below as a natural lead-in to additional content. This content is a little bit longer.

Last updated 3 mins ago

PlaceholderImage cap
Card title

This card has supporting text below as a natural lead-in to additional content.

Last updated 3 mins ago

PlaceholderImage cap
Card title

This is a wider card with supporting text below as a natural lead-in to additional content. This card has even longer content than the first to show that equal height action.

Last updated 3 mins ago

<div class="card-group">
  <div class="card">
    <img src="..." class="card-img-top" alt="...">
    <div class="card-body">
      <h5 class="card-title">Card title</h5>
      <p class="card-text">This is a wider card with supporting text below as a natural lead-in to additional content. This content is a little bit longer.</p>
      <p class="card-text"><small class="text-muted">Last updated 3 mins ago</small></p>
    </div>
  </div>
  <div class="card">
    <img src="..." class="card-img-top" alt="...">
    <div class="card-body">
      <h5 class="card-title">Card title</h5>
      <p class="card-text">This card has supporting text below as a natural lead-in to additional content.</p>
      <p class="card-text"><small class="text-muted">Last updated 3 mins ago</small></p>
    </div>
  </div>
  <div class="card">
    <img src="..." class="card-img-top" alt="...">
    <div class="card-body">
      <h5 class="card-title">Card title</h5>
      <p class="card-text">This is a wider card with supporting text below as a natural lead-in to additional content. This card has even longer content than the first to show that equal height action.</p>
      <p class="card-text"><small class="text-muted">Last updated 3 mins ago</small></p>
    </div>
  </div>
</div>

使用带页脚的卡片组时，其内容将自动排列。

PlaceholderImage cap
Card title

This is a wider card with supporting text below as a natural lead-in to additional content. This content is a little bit longer.

Last updated 3 mins ago
PlaceholderImage cap
Card title

This card has supporting text below as a natural lead-in to additional content.

Last updated 3 mins ago
PlaceholderImage cap
Card title

This is a wider card with supporting text below as a natural lead-in to additional content. This card has even longer content than the first to show that equal height action.

Last updated 3 mins ago 
<div class="card-group">
  <div class="card">
    <img src="..." class="card-img-top" alt="...">
    <div class="card-body">
      <h5 class="card-title">Card title</h5>
      <p class="card-text">This is a wider card with supporting text below as a natural lead-in to additional content. This content is a little bit longer.</p>
    </div>
    <div class="card-footer">
      <small class="text-muted">Last updated 3 mins ago</small>
    </div>
  </div>
  <div class="card">
    <img src="..." class="card-img-top" alt="...">
    <div class="card-body">
      <h5 class="card-title">Card title</h5>
      <p class="card-text">This card has supporting text below as a natural lead-in to additional content.</p>
    </div>
    <div class="card-footer">
      <small class="text-muted">Last updated 3 mins ago</small>
    </div>
  </div>
  <div class="card">
    <img src="..." class="card-img-top" alt="...">
    <div class="card-body">
      <h5 class="card-title">Card title</h5>
      <p class="card-text">This is a wider card with supporting text below as a natural lead-in to additional content. This card has even longer content than the first to show that equal height action.</p>
    </div>
    <div class="card-footer">
      <small class="text-muted">Last updated 3 mins ago</small>
    </div>
  </div>
</div>

卡片组（Card decks）

需要一套宽度和高度相等的卡片，而不是彼此相连吗？使用卡片组。

PlaceholderImage cap
Card title

This is a longer card with supporting text below as a natural lead-in to additional content. This content is a little bit longer.

Last updated 3 mins ago

PlaceholderImage cap
Card title

This card has supporting text below as a natural lead-in to additional content.

Last updated 3 mins ago

PlaceholderImage cap
Card title

This is a wider card with supporting text below as a natural lead-in to additional content. This card has even longer content than the first to show that equal height action.

Last updated 3 mins ago

<div class="card-deck">
  <div class="card">
    <img src="..." class="card-img-top" alt="...">
    <div class="card-body">
      <h5 class="card-title">Card title</h5>
      <p class="card-text">This is a longer card with supporting text below as a natural lead-in to additional content. This content is a little bit longer.</p>
      <p class="card-text"><small class="text-muted">Last updated 3 mins ago</small></p>
    </div>
  </div>
  <div class="card">
    <img src="..." class="card-img-top" alt="...">
    <div class="card-body">
      <h5 class="card-title">Card title</h5>
      <p class="card-text">This card has supporting text below as a natural lead-in to additional content.</p>
      <p class="card-text"><small class="text-muted">Last updated 3 mins ago</small></p>
    </div>
  </div>
  <div class="card">
    <img src="..." class="card-img-top" alt="...">
    <div class="card-body">
      <h5 class="card-title">Card title</h5>
      <p class="card-text">This is a wider card with supporting text below as a natural lead-in to additional content. This card has even longer content than the first to show that equal height action.</p>
      <p class="card-text"><small class="text-muted">Last updated 3 mins ago</small></p>
    </div>
  </div>
</div>

就像卡片组一样，decks的卡片页脚会自动排列。

PlaceholderImage cap
Card title

This is a wider card with supporting text below as a natural lead-in to additional content. This content is a little bit longer.

Last updated 3 mins ago
PlaceholderImage cap
Card title

This card has supporting text below as a natural lead-in to additional content.

Last updated 3 mins ago
PlaceholderImage cap
Card title

This is a wider card with supporting text below as a natural lead-in to additional content. This card has even longer content than the first to show that equal height action.

Last updated 3 mins ago 
<div class="card-deck">
  <div class="card">
    <img src="..." class="card-img-top" alt="...">
    <div class="card-body">
      <h5 class="card-title">Card title</h5>
      <p class="card-text">This is a wider card with supporting text below as a natural lead-in to additional content. This content is a little bit longer.</p>
    </div>
    <div class="card-footer">
      <small class="text-muted">Last updated 3 mins ago</small>
    </div>
  </div>
  <div class="card">
    <img src="..." class="card-img-top" alt="...">
    <div class="card-body">
      <h5 class="card-title">Card title</h5>
      <p class="card-text">This card has supporting text below as a natural lead-in to additional content.</p>
    </div>
    <div class="card-footer">
      <small class="text-muted">Last updated 3 mins ago</small>
    </div>
  </div>
  <div class="card">
    <img src="..." class="card-img-top" alt="...">
    <div class="card-body">
      <h5 class="card-title">Card title</h5>
      <p class="card-text">This is a wider card with supporting text below as a natural lead-in to additional content. This card has even longer content than the first to show that equal height action.</p>
    </div>
    <div class="card-footer">
      <small class="text-muted">Last updated 3 mins ago</small>
    </div>
  </div>
</div>

网格卡片

使用 Bootstrap 网格系统及其 .row-cols 类 来控制每行显示多少网格列（围绕卡片）。例如，这里有 .row-cols-1 在一列上放置卡片，以及 .row-cols-md-2 将四张卡从中间断点向上拆分为多行相等宽度。

PlaceholderImage cap
Card title

This is a longer card with supporting text below as a natural lead-in to additional content. This content is a little bit longer.

PlaceholderImage cap
Card title

This is a longer card with supporting text below as a natural lead-in to additional content. This content is a little bit longer.

PlaceholderImage cap
Card title

This is a longer card with supporting text below as a natural lead-in to additional content.

PlaceholderImage cap
Card title

This is a longer card with supporting text below as a natural lead-in to additional content. This content is a little bit longer.

<div class="row row-cols-1 row-cols-md-2">
  <div class="col mb-4">
    <div class="card">
      <img src="..." class="card-img-top" alt="...">
      <div class="card-body">
        <h5 class="card-title">Card title</h5>
        <p class="card-text">This is a longer card with supporting text below as a natural lead-in to additional content. This content is a little bit longer.</p>
      </div>
    </div>
  </div>
  <div class="col mb-4">
    <div class="card">
      <img src="..." class="card-img-top" alt="...">
      <div class="card-body">
        <h5 class="card-title">Card title</h5>
        <p class="card-text">This is a longer card with supporting text below as a natural lead-in to additional content. This content is a little bit longer.</p>
      </div>
    </div>
  </div>
  <div class="col mb-4">
    <div class="card">
      <img src="..." class="card-img-top" alt="...">
      <div class="card-body">
        <h5 class="card-title">Card title</h5>
        <p class="card-text">This is a longer card with supporting text below as a natural lead-in to additional content.</p>
      </div>
    </div>
  </div>
  <div class="col mb-4">
    <div class="card">
      <img src="..." class="card-img-top" alt="...">
      <div class="card-body">
        <h5 class="card-title">Card title</h5>
        <p class="card-text">This is a longer card with supporting text below as a natural lead-in to additional content. This content is a little bit longer.</p>
      </div>
    </div>
  </div>
</div>

换成 .row-cols-3 ，你会看到第四张卡片。

PlaceholderImage cap
Card title

This is a longer card with supporting text below as a natural lead-in to additional content. This content is a little bit longer.

PlaceholderImage cap
Card title

This is a longer card with supporting text below as a natural lead-in to additional content. This content is a little bit longer.

PlaceholderImage cap
Card title

This is a longer card with supporting text below as a natural lead-in to additional content.

PlaceholderImage cap
Card title

This is a longer card with supporting text below as a natural lead-in to additional content. This content is a little bit longer.

<div class="row row-cols-1 row-cols-md-3">
  <div class="col mb-4">
    <div class="card">
      <img src="..." class="card-img-top" alt="...">
      <div class="card-body">
        <h5 class="card-title">Card title</h5>
        <p class="card-text">This is a longer card with supporting text below as a natural lead-in to additional content. This content is a little bit longer.</p>
      </div>
    </div>
  </div>
  <div class="col mb-4">
    <div class="card">
      <img src="..." class="card-img-top" alt="...">
      <div class="card-body">
        <h5 class="card-title">Card title</h5>
        <p class="card-text">This is a longer card with supporting text below as a natural lead-in to additional content. This content is a little bit longer.</p>
      </div>
    </div>
  </div>
  <div class="col mb-4">
    <div class="card">
      <img src="..." class="card-img-top" alt="...">
      <div class="card-body">
        <h5 class="card-title">Card title</h5>
        <p class="card-text">This is a longer card with supporting text below as a natural lead-in to additional content.</p>
      </div>
    </div>
  </div>
  <div class="col mb-4">
    <div class="card">
      <img src="..." class="card-img-top" alt="...">
      <div class="card-body">
        <h5 class="card-title">Card title</h5>
        <p class="card-text">This is a longer card with supporting text below as a natural lead-in to additional content. This content is a little bit longer.</p>
      </div>
    </div>
  </div>
</div>

当你需要等高时，在卡片上加上 .h-100 。如果默认情况下需要等高，可以在Sass中设置 $card-height: 100%。

PlaceholderImage cap
Card title

This is a longer card with supporting text below as a natural lead-in to additional content. This content is a little bit longer.

PlaceholderImage cap
Card title

This is a short card.

PlaceholderImage cap
Card title

This is a longer card with supporting text below as a natural lead-in to additional content.

PlaceholderImage cap
Card title

This is a longer card with supporting text below as a natural lead-in to additional content. This content is a little bit longer.

<div class="row row-cols-1 row-cols-md-3">
  <div class="col mb-4">
    <div class="card h-100">
      <img src="..." class="card-img-top" alt="...">
      <div class="card-body">
        <h5 class="card-title">Card title</h5>
        <p class="card-text">This is a longer card with supporting text below as a natural lead-in to additional content. This content is a little bit longer.</p>
      </div>
    </div>
  </div>
  <div class="col mb-4">
    <div class="card h-100">
      <img src="..." class="card-img-top" alt="...">
      <div class="card-body">
        <h5 class="card-title">Card title</h5>
        <p class="card-text">This is a short card.</p>
      </div>
    </div>
  </div>
  <div class="col mb-4">
    <div class="card h-100">
      <img src="..." class="card-img-top" alt="...">
      <div class="card-body">
        <h5 class="card-title">Card title</h5>
        <p class="card-text">This is a longer card with supporting text below as a natural lead-in to additional content.</p>
      </div>
    </div>
  </div>
  <div class="col mb-4">
    <div class="card h-100">
      <img src="..." class="card-img-top" alt="...">
      <div class="card-body">
        <h5 class="card-title">Card title</h5>
        <p class="card-text">This is a longer card with supporting text below as a natural lead-in to additional content. This content is a little bit longer.</p>
      </div>
    </div>
  </div>
</div>

卡片列

卡片可以被组织成类似 Masonry的列，只需用CSS将它们包装在 .card-columns中即可。卡片是用CSS column 属性而不是flexbox构建的，以便于对齐。卡片从上到下，从左到右排列。

抬头！您的卡列里程可能会有所不同。为了防止卡片在列之间断开，我们必须将它们设置为 display: inline-block 作为 column-break-inside: avoid还不是一个防范的解决方案。

PlaceholderImage cap
Card title that wraps to a new line

This is a longer card with supporting text below as a natural lead-in to additional content. This content is a little bit longer.

A well-known quote, contained in a blockquote element.

Someone famous in Source Title
PlaceholderImage cap
Card title

This card has supporting text below as a natural lead-in to additional content.

Last updated 3 mins ago

A well-known quote, contained in a blockquote element.

Someone famous in Source Title
Card title

This card has a regular title and short paragraphy of text below it.

Last updated 3 mins ago

PlaceholderCard image

A well-known quote, contained in a blockquote element.

Someone famous in Source Title
Card title

This is another card with title and supporting text below. This card has some additional content to make it slightly taller overall.

Last updated 3 mins ago

<div class="card-columns">
  <div class="card">
    <img src="..." class="card-img-top" alt="...">
    <div class="card-body">
      <h5 class="card-title">Card title that wraps to a new line</h5>
      <p class="card-text">This is a longer card with supporting text below as a natural lead-in to additional content. This content is a little bit longer.</p>
    </div>
  </div>
  <div class="card p-3">
    <blockquote class="blockquote mb-0 card-body">
      <p>A well-known quote, contained in a blockquote element.</p>
      <footer class="blockquote-footer">
        <small class="text-muted">
          Someone famous in <cite title="Source Title">Source Title</cite>
        </small>
      </footer>
    </blockquote>
  </div>
  <div class="card">
    <img src="..." class="card-img-top" alt="...">
    <div class="card-body">
      <h5 class="card-title">Card title</h5>
      <p class="card-text">This card has supporting text below as a natural lead-in to additional content.</p>
      <p class="card-text"><small class="text-muted">Last updated 3 mins ago</small></p>
    </div>
  </div>
  <div class="card bg-primary text-white text-center p-3">
    <blockquote class="blockquote mb-0">
      <p>A well-known quote, contained in a blockquote element.</p>
      <footer class="blockquote-footer text-white">
        <small>
          Someone famous in <cite title="Source Title">Source Title</cite>
        </small>
      </footer>
    </blockquote>
  </div>
  <div class="card text-center">
    <div class="card-body">
      <h5 class="card-title">Card title</h5>
      <p class="card-text">This card has a regular title and short paragraphy of text below it.</p>
      <p class="card-text"><small class="text-muted">Last updated 3 mins ago</small></p>
    </div>
  </div>
  <div class="card">
    <img src="..." class="card-img" alt="...">
  </div>
  <div class="card p-3 text-right">
    <blockquote class="blockquote mb-0">
      <p>A well-known quote, contained in a blockquote element.</p>
      <footer class="blockquote-footer">
        <small class="text-muted">
          Someone famous in <cite title="Source Title">Source Title</cite>
        </small>
      </footer>
    </blockquote>
  </div>
  <div class="card">
    <div class="card-body">
      <h5 class="card-title">Card title</h5>
      <p class="card-text">This is another card with title and supporting text below. This card has some additional content to make it slightly taller overall.</p>
      <p class="card-text"><small class="text-muted">Last updated 3 mins ago</small></p>
    </div>
  </div>
</div>

卡片列也可以通过一些附加代码进行扩展和定制。下面显示的是.card-columns 类的扩展，它使用与我们使用CSS列相同的CSS来生成一组用于更改列数的响应层。

.card-columns {
  @include media-breakpoint-only(lg) {
    column-count: 4;
  }
  @include media-breakpoint-only(xl) {
    column-count: 5;
  }
}