Stretched link

通过CSS “拉伸(stretching)“嵌套链接，使任何HTML元素或Bootstrap组件都可以点击。

将 .stretched-link 添加到链接以使其成为containing block可通过::after 伪元素点击。在大多数情况下，这意味着具有position: relative;的元素包含带有’stretched-link’类的链接的是可单击的。请注意给定的CSS position如何工作、.stretched-link不能与大多数表元素混合。

默认情况下，卡在Bootstrap中具有position:relative，因此在这种情况下，您可以安全地将.stended-link类添加到卡中的链接，而无需任何其他HTML更改。

对于拉伸的链接，不建议使用多个链接和点击目标。但是，如果需要，一些 position 和 z-index 样式可能会有所帮助。

Card with stretched link

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

Go somewhere

html

<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>

默认情况下，大多数自定义组件没有position:relative，因此我们需要在此处添加.position-relative以防止链接延伸到父元素之外。

Custom component with stretched link

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.

Go somewhere

html

<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>

Columns with stretched link

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.

Go somewhere

html

<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

如果拉伸的链接似乎不起作用，则包含块可能是原因。因为以下CSS属性将使元素成为包含块：

static以外的其他position值`
none以外的transform或perspective值`
transform或perspective的will-change值
除none或will-change值之外的filter值为filter(仅适用于Firefox)

Card with stretched links

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

Stretched link will not work here, because position: relative is added to the link

This stretched link will only be spread over the p-tag, because a transform is applied to it.

html

<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>