引导程序 4:获取卡列中的最后一张卡

Question

我正在使用 Bootstrap 4 来构建砖石卡组。 现在我有 3 列，里面有 3 张卡片。 是否可以解决每列的最后一张卡片？

我可以用以下代码处理套牌的最后一张牌：

card-columns div.card:last-of-type

但这是否也适用于每一列？

这是卡组的代码：

<div class="card-columns">
<div class="card">
<img class="card-img-top img-fluid" 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 p-3">
<blockquote class="card-block 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 img-fluid" 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-inverse card-primary p-3 text-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 text-center">
<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">
<img class="card-img img-fluid" src="..." alt="Card image">
</div>
<div class="card p-3 text-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">
<div class="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>
</div>

Answer 1

这将是该问题的动态解决方案，具有给定的HTML结构。

.card-columns div.card p:last-child {
background: #ff0000;
}

<div class="card-columns">
<div class="card">
<p>The first paragraph of div 1.</p>
<p>The second paragraph of div 1.</p>
<p>The third paragraph of div 1.</p>
<p>The fourth paragraph of div 1.</p>
</div>
<div class="card">
<p>The first paragraph of div 2.</p>
<p>The second paragraph of div 2.</p>
<p>The third paragraph of div 2.</p>
<p>The fourth paragraph of div 2.</p>
</div>
</div>

Answer 2

我找到了一个解决方案：

.card-columns div.card:nth-child(3n)

这将获取每列的最后一张卡