通过 CSS “拉伸”嵌套链接，使任何 HTML 元素或 Bootstrap 组件都可点击。
添加到链接以使其包含的块可通过伪元素单击。在大多数情况下，这意味着包含类链接的元素是可点击的。请注意，鉴于 CSS 位置的工作原理，不能与大多数表格元素混合使用。.stretched-link::afterposition: relative;.stretched-link.stretched-link
默认情况下，卡片在 Bootstrap 中，因此在这种情况下，您可以安全地将类添加到卡片中的链接中，而无需进行任何其他 HTML 更改。position: relative.stretched-link
不建议使用拉伸链接使用多个链接和点击目标。但是，如果需要，一些样式可以提供帮助。positionz-index
<div class="card" style="width: 18rem;">
<img src="..." class="card-img-top" alt="...">
<div class="card-body">
<h5 class="card-title">Card with stretched link</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 stretched-link">Go somewhere</a>
</div>
</div>大多数自定义组件默认没有，因此我们需要添加 here 以防止链接延伸到父元素之外。position: relative.position-relative
<div class="d-flex position-relative">
<img src="..." class="flex-shrink-0 me-3" alt="...">
<div>
<h5 class="mt-0">Custom component with stretched link</h5>
<p>This is some placeholder content for the custom component. It is intended to mimic what some real-world content would look like, and we’re using it here to give the component a bit of body and size.</p>
<a href="#" class="stretched-link">Go somewhere</a>
</div>
</div><div class="row g-0 bg-body-secondary position-relative">
<div class="col-md-6 mb-md-0 p-md-4">
<img src="..." class="w-100" alt="...">
</div>
<div class="col-md-6 p-4 ps-md-0">
<h5 class="mt-0">Columns with stretched link</h5>
<p>Another instance of placeholder content for this other custom component. It is intended to mimic what some real-world content would look like, and we’re using it here to give the component a bit of body and size.</p>
<a href="#" class="stretched-link">Go somewhere</a>
</div>
</div>识别包含块
如果拉伸链接似乎不起作用，则包含块可能是原因。以下 CSS 属性将使元素成为包含块：
- 除
positionstatic - A 或值
transformperspectivenone - 值为 或
will-changetransformperspective - 其他值或值 （仅适用于 Firefox）
filternonewill-changefilter
带有拉伸链接的卡片
一些快速示例文本，以卡片标题为基础，并构成卡片的大部分内容。
延伸链接在这里不起作用，因为 已添加到链接中position: relative
这个延伸链接只会分布在 -tag 上，因为对它应用了转换。p
<div class="card" style="width: 18rem;">
<img src="..." class="card-img-top" alt="...">
<div class="card-body">
<h5 class="card-title">Card with stretched links</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>
<p class="card-text">
<a href="#" class="stretched-link text-danger" style="position: relative;">Stretched link will not work here, because <code>position: relative</code> is added to the link</a>
</p>
<p class="card-text bg-body-tertiary" style="transform: rotate(0);">
This <a href="#" class="text-warning stretched-link">stretched link</a> will only be spread over the <code>p</code>-tag, because a transform is applied to it.
</p>
</div>
</div>