我使用引导4 alpha 2和利用卡。 具体来说,我正在处理这个来自官方文档的例子。我怎样才能使所有的卡片都是相同的高度?

我现在能想到的就是设置下面的CSS规则:

.card {
    min-height: 200px;
}

但这只是一个硬编码的解决方案,在一般情况下是行不通的。 在我的视图中的代码与文档中的代码相同,即:

<div class="card-columns">
  <div class="card">
    <img class="card-img-top" data-src="..." alt="Card image cap">
    <div class="card-block">
      <h4 class="card-title">Card title that wraps to a new line</h4>
      <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 card-block">
    <blockquote class="card-blockquote">
      <p>Lorem ipsum dolor sit amet, consectetur adipiscing elit. Integer posuere erat a ante.</p>
      <footer>
        <small class="text-muted">
          Someone famous in <cite title="Source Title">Source Title</cite>
        </small>
      </footer>
    </blockquote>
  </div>
  <div class="card">
    <img class="card-img-top" data-src="..." alt="Card image cap">
    <div class="card-block">
      <h4 class="card-title">Card title</h4>
      <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 card-block card-inverse card-primary text-xs-center">
    <blockquote class="card-blockquote">
      <p>Lorem ipsum dolor sit amet, consectetur adipiscing elit. Integer posuere erat.</p>
      <footer>
        <small>
          Someone famous in <cite title="Source Title">Source Title</cite>
        </small>
      </footer>
    </blockquote>
  </div>
  <div class="card card-block text-xs-center">
    <h4 class="card-title">Card title</h4>
    <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 class="card">
    <img class="card-img" data-src="..." alt="Card image">
  </div>
  <div class="card card-block text-xs-right">
    <blockquote class="card-blockquote">
      <p>Lorem ipsum dolor sit amet, consectetur adipiscing elit. Integer posuere erat a ante.</p>
      <footer>
        <small class="text-muted">
          Someone famous in <cite title="Source Title">Source Title</cite>
        </small>
      </footer>
    </blockquote>
  </div>
  <div class="card card-block">
    <h4 class="card-title">Card title</h4>
    <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>

当前回答

你可以使用card-deck,它会对齐所有的卡片…这来自bootstrap 4官方页面。

<div class="card-deck">
  <div class="card">
    <img class="card-img-top" src="..." alt="Card image cap">
    <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 class="card-img-top" src="..." alt="Card image cap">
    <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 class="card-img-top" src="..." alt="Card image cap">
    <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>

其他回答

另一个有用的方法是卡片网格:

<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>

根据这个问题我有一个答案,它可能会帮助你,你可以使用它。你可以使用height属性并将其设置为height: 100vh;我已经使用了70vh和卡将固定高度,你给的。

<!DOCTYPE html> <html lang="en"> <head> <meta charset="UTF-8"> <meta http-equiv="X-UA-Compatible" content="IE=edge"> <meta name="viewport" content="width=device-width, initial-scale=1.0"> <!-- Bootstrap 4.5 CSS--> <link rel="stylesheet" href="https://stackpath.bootstrapcdn.com/bootstrap/4.5.2/css/bootstrap.min.css" integrity="sha384-JcKb8q3iqJ61gNV9KGb8thSsNjpSL0n8PARn9HuZOnIxN0hoP+VmmDGMN5t9UJ0Z" crossorigin="anonymous"> <!-- Bootstrap JS Requirements --> <script src="https://code.jquery.com/jquery-3.5.1.slim.min.js" integrity="sha384-DfXdz2htPH0lsSSs5nCTpuj/zy4C+OGpamoFVy38MVBnE+IbbVYUew+OrCXaRkfj" crossorigin="anonymous"></script> <script src="https://cdn.jsdelivr.net/npm/popper.js@1.16.1/dist/umd/popper.min.js" integrity="sha384-9/reFTGAW83EW2RDu2S0VKaIzap3H66lZH81PoYlFhbGU+6BZp6G7niu735Sk7lN" crossorigin="anonymous"></script> <script src="https://stackpath.bootstrapcdn.com/bootstrap/4.5.2/js/bootstrap.min.js" integrity="sha384-B4gt1jrGC7Jh4AgTPSdUtOBvfO8shuf57BaghqFfPlYxofvL8/KUEfYiJOMMV+rV" crossorigin="anonymous"></script> <link rel="stylesheet" href="index.css"> <title>Document</title> </head> <script src="https://cdnjs.cloudflare.com/ajax/libs/font-awesome/5.13.0/js/all.min.js"></script> <style> /*Use height property to set equil card height*/ .card { background-color: #56568a; margin: 10px !important; height: 70vh; width: auto; } </style> <body> <div class="container"> <div class="col-sm-6 col-md-6 col-lg-3"> <div class="card"> <img class="card-img-top img-fluid" src="img5.PNG" alt="Card image cap"> <div class="card-block"> <small class="purple"> Product Launch</small> <h4 class="card-title">Leveraging Social Proof for Growth</h4> <p class="card-text">Duolingo removes language barriers by connecting people that need websites translated with students that learning a language...</p> <p class="card-text "><i class="far fa-user"></i><small class="purple">Praveen</small> <i class="far fa-clock "></i><small class="purple">Today</small> </p> </div> </div> </div> <div class="col-sm-6 col-md-6 col-lg-3"> <div class="card"> <img class="card-img-top img-fluid" src="img6.PNG" alt="Card image cap"> <div class="card-block"> <small class="purple"> ddc</small> <h4 class="card-title">Leveraging Social Proof for Growth</h4> <p class="card-text">Duolingo removes language barriers by connecting people that need websites translated with students that learning a language...</p> <p class="card-text"><i class="far fa-user"></i><small class="purple">Praveen</small> <i class="far fa-clock "></i><small class="purple">2 days ago</small> </p> </div> </div> </div> </div> </body> </html>

以下是我的做法:

CSS:

.my-flex-card > div > div.card {
    height: calc(100% - 15px);
    margin-bottom: 15px;
}

HTML:

<div class="row my-flex-card">
    <div class="col-lg-3 col-sm-6">
        <div class="card">
            <div class="card-block">
                aaaa
            </div>
        </div>
    </div>
    <div class="col-lg-3 col-sm-6">
        <div class="card">
            <div class="card-block">
                bbbb
            </div>
        </div>
    </div>
    <div class="col-lg-3 col-sm-6">
        <div class="card">
            <div class="card-block">
                cccc
            </div>
        </div>
    </div>
    <div class="col-lg-3 col-sm-6">
        <div class="card">
            <div class="card-block">
                dddd
            </div>
        </div>
    </div>
</div>

您可以添加d-flex和flex-column的div与卡体。

下面是一个工作示例:

<link href="https://cdnjs.cloudflare.com/ajax/libs/twitter-bootstrap/4.6.0/css/bootstrap-grid.min.css" rel="stylesheet" /> <link href="https://cdnjs.cloudflare.com/ajax/libs/twitter-bootstrap/4.6.0/css/bootstrap.min.css" rel="stylesheet" /> <div class="container"> <div class="row"> <div class="col-4 d-flex align-self-stretch"> <div class="card shadow-sm mb-4"> <img src="https://placehold.it/500x300" class="card-img-top" alt=""> <div class="card-body d-flex flex-column"> <h5 class="card-title text-uppercase">Longer title here that wraps two lines</h5> <p class="text-muted">Lorem ipsum dolor </p> <div class="mt-auto border border-danger"> <p class="text-uppercase mb-0">Hello World!</p> <p class="text-uppercase">consectetur adipiscing elit</p> <a href="#" class="btn btn-info btn-block">CTA</a> </div> </div> </div> </div> <div class="col-4 d-flex align-self-stretch"> <div class="card shadow-sm mb-4"> <img src="https://placehold.it/500x300" class="card-img-top" alt=""> <div class="card-body d-flex flex-column"> <h5 class="card-title text-uppercase">Smaller title here that wraps 1 line</h5> <p class="text-muted">Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua.Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua.</p> <div class="mt-auto border border-danger"> <p class="text-uppercase mb-0">Hello World!</p> <p class="text-uppercase">adipiscing </p> <a href="#" class="btn btn-info btn-block">CTA</a> </div> </div> </div> </div> <div class="col-4 d-flex align-self-stretch"> <div class="card shadow-sm mb-4"> <img src="https://placehold.it/500x300" class="card-img-top" alt=""> <div class="card-body d-flex flex-column"> <h5 class="card-title text-uppercase">Longer title here that wraps 3 lines, Lorem ipsum dolor sit amet, consectetur adipiscing elit</h5> <p class="text-muted">Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua.</p> <div class="mt-auto border border-danger"> <p class="text-uppercase mb-0">Hello World!</p> <a href="#" class="btn btn-info btn-block">CTA</a> </div> </div> </div> </div> </div> </div>

我正在使用Bootstrap 4 (Beta 2)。与此同时,情况似乎发生了变化。我也遇到了同样的问题,但我找到了一个简单的解决方法。这是我的代码:

<div class="container-fluid content-row">
    <div class="row">
        <div class="col-sm-12 col-lg-6">
            <div class="card h-100">
                … content card …
            </div>
        </div>
        … all the other cards … 
    </div>
</div>

使用“col-sm-12 col-lg-6”,我使卡片具有响应性。使用“card h-100”,我将所有卡片设置为它们的父列的高度。在我的系统上这是可行的,但我不是专业的。希望我能帮到别人。