nav.html

<div class="navbar navbar-default navbar-fixed-top" role="navigation">
    <div class="container">

        <!-- Collapsed navigation -->
        <div class="navbar-header">
            {% if include_nav or include_next_prev or repo_url %}
            <!-- Expander button -->
            <button type="button" class="navbar-toggle" data-toggle="collapse" data-target=".navbar-collapse">
                <span class="sr-only">Toggle navigation</span>
                <span class="icon-bar"></span>
                <span class="icon-bar"></span>
                <span class="icon-bar"></span>
            </button>
            {% endif %}

            <!-- Main title -->
            <a class="navbar-brand" href="{{ homepage_url }}">{{ site_name }}</a>
        </div>

        <!-- Expanded navigation -->
        <div class="navbar-collapse collapse">
            {% if include_nav %}
                <!-- Main navigation -->
                <ul class="nav navbar-nav">
                {% for nav_item in nav %}
                {% if nav_item.children %}
                    <li class="dropdown{% if nav_item.active %} active{% endif %}">
                        <a href="#" class="dropdown-toggle" data-toggle="dropdown">{{ nav_item.title }} <b class="caret"></b></a>
                        <ul class="dropdown-menu">
                        {% for nav_item in nav_item.children %}
                            {% include "nav-sub.html" %}
                        {% endfor %}
                        </ul>
                    </li>
                {% else %}
                    <li {% if nav_item.active %}class="active"{% endif %}>
                        <a href="{{ nav_item.url }}">{{ nav_item.title }}</a>
                    </li>
                {% endif %}
                {% endfor %}
                </ul>
            {% endif %}

            <ul class="nav navbar-nav navbar-right">
                <li>
                    <a href="#" data-toggle="modal" data-target="#mkdocs_search_modal">
                        <i class="fa fa-search"></i> Search
                    </a>
                </li>
                {% if include_next_prev %}
                    <li {% if not previous_page %}class="disabled"{% endif %}>
                        <a rel="next" {% if previous_page %}href="{{ previous_page.url }}"{% endif %}>
                            <i class="fa fa-arrow-left"></i> Previous
                        </a>
                    </li>
                    <li {% if not next_page %}class="disabled"{% endif %}>
                        <a rel="prev" {% if next_page %}href="{{ next_page.url }}"{% endif %}>
                            Next <i class="fa fa-arrow-right"></i>
                        </a>
                    </li>
                {% endif %}
                {% if repo_url %}
                    <li>
                        <a href="{{ repo_url }}">
                            {% if repo_name == 'GitHub' %}
                                <i class="fa fa-github"></i>
                            {% elif repo_name == 'Bitbucket' %}
                                <i class="fa fa-bitbucket"></i>
                            {% endif %}
                            {{ repo_name }}
                        </a>
                    </li>
                {% endif %}
            </ul>
        </div>
    </div>
</div>