Listing_2.5.html

<style>
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.
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.alert {
  background: red;
}
</style>
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<div id="exec-bio" class="bio-box alert">
  <a href="https://example.com/">I'm a link</a>
</div>
<div class="bio-box">
  <a href="https://example.com/">I'm a link</a>
</div>
<div class="bio-box">
  <a href="https://example.com/">I'm a link</a>
</div>
<div class="bio-box alert">
  <a href="https://example.com/">I'm a link</a>
</div>
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