Comparing the Absolute anchor tag to the anchor tag with an absolute span

I have come across two methods for extending a link over a card, container, div, or any other element in order to make the entire area clickable.

The first approach involves positioning the <a> tag as an absolute element.

The second method keeps the <a> tag as is and inserts an absolute span tag inside it, causing the a element to expand and fill the container.

Is there a specific advantage of one method over the other?

.card {
  height: 100px;
  background: green;
  position: relative;
  margin-bottom: 50px;
}

.absolute-a, .absolute-span {
  padding: 10px;
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
}
<div class="card">
  <a href="#" class="absolute-a">
    Using absolute on anchor
  </a>
</div> 

<div class="card">
  <a href="#">
    <span class="absolute-span">
      Using absolute span
    </span>
  </a>
</div>

Answer №1

When considering accessibility, one notable difference between using an absolute anchor tag and an absolute span tag is the appearance of the visible focus rectangle when either element is in focus.

For the absolute anchor card, the visible focus rectangle encompasses the entire card: https://i.sstatic.net/pRdFI.png

Conversely, for the absolute span card, the visible focus rectangle may not appear (in Chrome) or be very small (in Firefox): https://i.sstatic.net/ctLnw.png

Having a visible focus rectangle for an element in focus is necessary to adhere to WCAG 2 guidelines (refer to guideline 2.4.7: Focus Visible).

I conducted tests with JAWS 2022 on both card examples, and it correctly announced the link in both scenarios.

Additionally, it's important to note that the color contrast ratio between the blue link text and the green background is currently too low to meet WCAG 2 standards. To ensure accessibility, consider increasing the contrast ratio to at least 4.5:1. While this may just be for demonstration purposes, it's worth mentioning given your focus on accessibility.

Answer №2

It all boils down to your specific requirements. Ultimately, you simply need a link to occupy a space. It doesn't necessarily have to be absolutely positioned. It's purely a matter of personal preference.

.card {
  height: 100px;
  background: green;
  position: relative;
  margin-bottom: 50px;
}

.absolute-a, .absolute-span {
  padding: 10px;
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
}

a.alt {
  height:100%;
  width:100%;
  display:inline-block;
  border:1px dashed yellow;
}
<div class="card">
  <a href="#" class="absolute-a">
    Implementing absolute positioning on an anchor element
  </a>
</div>

<div class="card">
  <a href="#">
    <span class="absolute-span">
      Utilizing absolute positioning with a span element
    </span>
  </a>
</div>

<div class="card">
 <a class="alt" href="#">Hi</a>
</div>

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