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75 lines
4.1 KiB
Markdown
75 lines
4.1 KiB
Markdown
---
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layout: docs
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title: Stretched link
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description: Make any HTML element or Bootstrap component clickable by "stretching" a nested link via CSS.
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group: helpers
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---
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Add `.stretched-link` to a link to make its [containing block](https://developer.mozilla.org/en-US/docs/Web/CSS/Containing_block) clickable via a `::after` pseudo element. In most cases, this means that an element with `position: relative;` that contains a link with the `.stretched-link` class is clickable. Please note given [how CSS `position` works](https://www.w3.org/TR/CSS21/visuren.html#propdef-position), `.stretched-link` cannot be mixed with most table elements.
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Cards have `position: relative` by default in Bootstrap, so in this case you can safely add the `.stretched-link` class to a link in the card without any other HTML changes.
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Multiple links and tap targets are not recommended with stretched links. However, some `position` and `z-index` styles can help should this be required.
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{{< example >}}
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<div class="card" style="width: 18rem;">
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{{< placeholder width="100%" height="180" class="card-img-top" text="false" title="Card image cap" >}}
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<div class="card-body">
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<h5 class="card-title">Card with stretched link</h5>
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<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>
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<a href="#" class="btn btn-primary stretched-link">Go somewhere</a>
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</div>
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</div>
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{{< /example >}}
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Most custom components do not have `position: relative` by default, so we need to add the `.position-relative` here to prevent the link from stretching outside the parent element.
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{{< example >}}
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<div class="d-flex position-relative">
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{{< placeholder width="144" height="144" class="flex-shrink-0 me-3" text="false" title="Generic placeholder image" >}}
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<div>
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<h5 class="mt-0">Custom component with stretched link</h5>
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<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>
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<a href="#" class="stretched-link">Go somewhere</a>
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</div>
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</div>
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{{< /example >}}
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{{< example >}}
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<div class="row g-0 bg-light position-relative">
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<div class="col-md-6 mb-md-0 p-md-4">
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{{< placeholder width="100%" height="200" class="w-100" text="false" title="Generic placeholder image" >}}
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</div>
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<div class="col-md-6 p-4 ps-md-0">
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<h5 class="mt-0">Columns with stretched link</h5>
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<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>
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<a href="#" class="stretched-link">Go somewhere</a>
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</div>
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</div>
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{{< /example >}}
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## Identifying the containing block
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If the stretched link doesn't seem to work, the [containing block](https://developer.mozilla.org/en-US/docs/Web/CSS/Containing_block#Identifying_the_containing_block) will probably be the cause. The following CSS properties will make an element the containing block:
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- A `position` value other than `static`
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- A `transform` or `perspective` value other than `none`
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- A `will-change` value of `transform` or `perspective`
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- A `filter` value other than `none` or a `will-change` value of `filter` (only works on Firefox)
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{{< example >}}
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<div class="card" style="width: 18rem;">
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{{< placeholder width="100%" height="180" class="card-img-top" text="false" title="Card image cap" >}}
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<div class="card-body">
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<h5 class="card-title">Card with stretched links</h5>
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<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>
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<p class="card-text">
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<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>
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</p>
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<p class="card-text bg-light" style="transform: rotate(0);">
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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.
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</p>
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</div>
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</div>
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{{< /example >}}
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