<header>
  <fieldset>
    <legend>Header</legend>
    <p>
      <a href="#">Play the pop quiz</a>
    </p>
  </fieldset>
</header>

<p>
  <a href="#">Play the pop quiz</a>
</p>

:any-link {
  text-decoration-thickness: 0.08em; 
}

header :any-link {
  text-decoration: none;
}

header :any-link:hover {
  text-decoration: underline;
}




/* other styles */

body {
  font-family: Ubuntu, sans-serif;
}

p {
  text-align: center;
  font-size: 2em;
  font-weigth: bold;
}

External CSS

This Pen doesn't use any external CSS resources.

External JavaScript

This Pen doesn't use any external JavaScript resources.