<div class="hero-sml">
  <div class="wrapper">
    <div class="links-group">
      <h4>Popular links</h4>
        <ul class="popular-now">
          <li><a href="#">Dates and times</a></li>
          <li><a href="#">Tax returns</a></li>
          <li><a href="#">Broadband</a></li>
          <li><a href="#">Public holidays</a></li>
          <li><a href="#">Broadband</a></li>
          <li><a href="#">Public holidays</a></li>
          <li><a href="#">Tax returns</a></li>
          <li><a href="#">Dates and times</a></li>
        </ul>
      </div>
    </div>
</div>

<div class="links-group">
  <h3>Related topics</h2>
  <ul class="popular-now">
    <li><a href="#">Dates and times</a></li>
    <li><a href="#">Tax returns</a></li>
    <li><a href="#">Broadband</a></li>
    <li><a href="#">Public holidays</a></li>
    <li><a href="#">Broadband</a></li>
    <li><a href="#">Public holidays</a></li>
    <li><a href="#">Tax returns</a></li>
    <li><a href="#">Dates and times</a></li>
  </ul>
</div>

<div class="hero-sml">
  <div class="wrapper">
    <div class="links-group">
      <h4>Popular links</h4>
        <ul class="popular-now">
          <li><a href="#">Dates and times</a></li>
          <li><a href="#">Tax returns</a></li>
          <li><a href="#">Broadband</a></li>
          <li><a href="#">Public holidays</a></li>
          <li><a href="#">Broadband</a></li>
          <li><a href="#">Public holidays</a></li>
          <li><a href="#">Tax returns</a></li>
          <li><a href="#">Dates and times</a></li>
        </ul>
      </div>
    </div>
</div>

<div class="links-group">
  <h3>Related topics</h3>
  <ul class="popular-now">
    <li><a href="#">Dates and times</a></li>
    <li><a href="#">Tax returns</a></li>
    <li><a href="#">Broadband</a></li>
    <li><a href="#">Public holidays</a></li>
    <li><a href="#">Broadband</a></li>
    <li><a href="#">Public holidays</a></li>
    <li><a href="#">Tax returns</a></li>
    <li><a href="#">Dates and times</a></li>
  </ul>
</div>

Fix mis-matched heading tag in Group Links examples
Fix mis-matched heading tag in Group Links examples
