twbs--bootstrap/docs/_includes/nav-home.html

<header class="navbar navbar-dark navbar-sticky-top navbar-expand-md bd-navbar">
  <div class="d-flex w-100 align-items-center justify-content-between d-md-none bd-navbar-brand-wrap">
    <a class="navbar-brand" href="{{ site.baseurl }}/">
      Bootstrap
    </a>
    <button class="navbar-toggler" type="button" data-toggle="collapse" data-target="#bd-main-nav" aria-controls="bd-main-nav" aria-expanded="false" aria-label="Toggle navigation">
      <span class="navbar-toggler-icon"></span>
    </button>
  </div>

  <div class="collapse navbar-collapse" id="bd-main-nav">
    <ul class="navbar-nav">
      <li class="nav-item d-none d-md-block">
        <a class="nav-link {% if page.layout == "home" %}active{% endif %}" href="{{ site.baseurl }}/" onclick="ga('send', 'event', 'Navbar', 'Community links', 'Bootstrap');">Bootstrap</a>
      </li>
      <li class="nav-item">
        <a class="nav-link {% if page.layout == "docs" %}active{% endif %}" href="{{ site.baseurl }}/getting-started/introduction/" onclick="ga('send', 'event', 'Navbar', 'Community links', 'Docs');">Documentation</a>
      </li>
      <li class="nav-item">
        <a class="nav-link {% if page.title == "Examples" %}active{% endif %}" href="{{ site.baseurl }}/examples/" onclick="ga('send', 'event', 'Navbar', 'Community links', 'Examples');">Examples</a>
      </li>
      <li class="nav-item">
        <a class="nav-link" href="{{ site.themes }}" onclick="ga('send', 'event', 'Navbar', 'Community links', 'Themes');">Themes</a>
      </li>
      <li class="nav-item">
        <a class="nav-link" href="{{ site.expo }}" onclick="ga('send', 'event', 'Navbar', 'Community links', 'Expo');">Expo</a>
      </li>
      <li class="nav-item">
        <a class="nav-link" href="{{ site.blog }}" onclick="ga('send', 'event', 'Navbar', 'Community links', 'Blog');">Blog</a>
      </li>
    </ul>

    <ul class="navbar-nav flex-row ml-md-auto my-3 my-md-0">
      <li class="nav-item">
        <a class="nav-link p-2" href="{{ site.repo }}">
          {% include icons/github.svg %}
        </a>
      </li>
      <li class="nav-item">
        <a class="nav-link p-2" href="https://twitter.com/{{ site.twitter }}">
          {% include icons/twitter.svg %}
        </a>
      </li>
      <li class="nav-item">
        <a class="nav-link p-2" href="{{ site.slack }}">
          {% include icons/slack.svg %}
        </a>
      </li>
    </ul>

    <a class="btn btn-outline-secondary mb-3 mb-md-0 ml-md-3" href="{{ site.download.source }}">Download</a>
  </div>
</header>