<div class="dropdown">
  <button class="btn btn-bd-light dropdown-toggle" id="bd-versions" data-toggle="dropdown" aria-expanded="false">
    Bootstrap v{{ .Site.Params.docs_version }}
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  <div class="dropdown-menu dropdown-menu-md-right" aria-labelledby="bd-versions">
    <a class="dropdown-item active" href="/docs/{{ .Site.Params.docs_version }}/">Latest (5.0.x)</a>
    <div class="dropdown-divider"></div>
    <a class="dropdown-item" href="https://getbootstrap.com/docs/4.4/">v4.4.1</a>
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