リンクに stretched
属性を追加して、::after
擬似要素を使ってそのリンクの containing block がクリックが可能になるようにします。
ほとんどの場合、これは、 stretched
属性のリンクを含む position:relative;
の要素がクリック可能であることを意味します。
Bootstrapではデフォルトでカードに position:relative;
があるため、この場合、他のHTMLを変更せずに、カード内のリンクに stretched
属性を安全に追加できます。
複数のリンクやタップターゲットは、ストレッチリンクでは推奨されません。しかし、必要に応じて position
や z-index
スタイルを利用することができます。
ほとんどのカスタムコンポーネントはデフォルトで position: relative を持っていないので、リンクが親要素の外に伸びないようにするためにここに .position-relative を追加する必要があります。
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<template>
<b-div flex>
<b-img
src="https://dummyimage.com/144x144/868e96/868e96"
flex-shrink="0"
margin="e-3"
alt="Generic placeholder image"
/>
<b-div position="relative">
<CardTitle>
<b-h
level="5"
margin="t-0"
>
Custom component with stretched link
</b-h>
</CardTitle>
<b-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.
</b-p>
<Anchor
stretched
to="/"
>
Go somewhere
</Anchor>
</b-div>
</b-div>
</template>
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<template>
<Row
position="relative"
background-color="light"
gutter="0"
>
<Col
col="md-6"
margin="b-md-6"
padding="md-3"
>
<b-img
src="https://dummyimage.com/300x200/868e96/868e96"
alt="..."
fluid
/>
</Col>
<Col
col="md-6"
padding="3 s-md-0"
>
<b-h
level="5"
margin="t-0"
>
Columns with stretched link
</b-h>
<b-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.
</b-p>
<Anchor
stretched
to="/"
>
Go somewhere
</Anchor>
</Col>
</Row>
</template>
Identifying the containing block
伸びたリンクがうまくいかないようであれば、containing block が原因ではないかと思います。以下のCSSプロパティで要素を content blockにします。
static
以外のposition
値none
以外のtransform
またはperspective
値transform
またはperspective
のwill-change
値filter
のnone
またはfilter
のwill-change
以外の値 (Firefoxでのみ動作します。)
Card with stretched link
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.
<template>
<b-div style="width: 18rem">
<Card>
<b-img
src="https://dummyimage.com/286x180/868e96/868e96"
fluid
alt="Card image cap"
/>
<CardBody>
<CardHeader>
<b-h level="5">
Card with stretched link
</b-h>
</CardHeader>
<CardText>
Some quick example text to build on the card title and make up the
bulk of the card's content.
</CardText>
<CardText>
<Anchor
stretched
to="/"
text="danger"
position="relative"
>
Stretched link will not work here, because
<code>position: relative</code>
is added to the link
</Anchor>
</CardText>
<CardText class="bg-light">
This
<Anchor stretched>
stretched link
</Anchor>
will only be spread over the
<code>p</code>
-tag, because a transform is applied to it.
</CardText>
</CardBody>
</Card>
</b-div>
</template>