延伸链接

通过CSS“拉伸”嵌套链接,使任何HTML元素或Bootstrap组件均可点击。

在链接中添加.stretched-link以使其containing block 可以通过:: after伪元素单击 。 在大多数情况下,这意味着可以单击带有带有.stretched-link`类链接的带有position:relative;元素的元素。

卡在Bootstrap中默认情况下具有position: relative,因此在这种情况下,您可以安全地将“ .stretched-link”类添加到卡中的链接,而无需进行其他任何HTML更改。

拉伸链接不建议使用多个链接和点击目标。 但是,如果需要,一些positionz-index样式可以提供帮助。

Card image cap
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
<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>

媒体对象默认情况下不具有“ position:relative”,因此我们需要在此处添加“ .position-relative”,以防止链接延伸到媒体对象外部。

Generic placeholder image
Media with stretched link

Cras sit amet nibh libero, in gravida nulla. Nulla vel metus scelerisque ante sollicitudin. Cras purus odio, vestibulum in vulputate at, tempus viverra turpis. Fusce condimentum nunc ac nisi vulputate fringilla. Donec lacinia congue felis in faucibus.

Go somewhere
<div class="media position-relative">
  <img src="..." class="mr-3" alt="...">
  <div class="media-body">
    <h5 class="mt-0">Media with stretched link</h5>
    <p>Cras sit amet nibh libero, in gravida nulla. Nulla vel metus scelerisque ante sollicitudin. Cras purus odio, vestibulum in vulputate at, tempus viverra turpis. Fusce condimentum nunc ac nisi vulputate fringilla. Donec lacinia congue felis in faucibus.</p>
    <a href="#" class="stretched-link">Go somewhere</a>
  </div>
</div>

列默认为position: relative,因此可点击的列仅需要链接上的.stretched-link`类。 但是,在整个.row上扩展链接需要在列上使用.position-static和在行上使用.position-relative。

Generic placeholder image
Columns with stretched link

Cras sit amet nibh libero, in gravida nulla. Nulla vel metus scelerisque ante sollicitudin. Cras purus odio, vestibulum in vulputate at, tempus viverra turpis. Fusce condimentum nunc ac nisi vulputate fringilla. Donec lacinia congue felis in faucibus.

Go somewhere
<div class="row no-gutters bg-light 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 position-static p-4 pl-md-0">
    <h5 class="mt-0">Columns with stretched link</h5>
    <p>Cras sit amet nibh libero, in gravida nulla. Nulla vel metus scelerisque ante sollicitudin. Cras purus odio, vestibulum in vulputate at, tempus viverra turpis. Fusce condimentum nunc ac nisi vulputate fringilla. Donec lacinia congue felis in faucibus.</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,则可能是containing block 。 以下CSS属性将使元素成为包含块:

  • A position value other than static
  • A transform or perspective value other than none
  • A will-change value of transform or perspective
  • A filter value other than none or a will-change value of filter (only works on Firefox)
Card image cap
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.

<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-light" 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>