Blog/layouts/partials/header.html

<!-- Navbar
================================================== -->
<nav class="navbar navbar-expand-lg navbar-dark bg-primary">
    <a class="navbar-brand" href="{{ .Site.BaseURL }}">{{ .Site.Title }}</a>
    <button type="button" class="navbar-toggler" data-toggle="collapse" data-target="#main-nav" aria-controls="navbarResponsive" aria-expanded="false" aria-label="Toggle navigation">
        <span class="navbar-toggler-icon"></span>
    </button>
    <div id="main-nav" class="collapse nav-collapse">
        <ul class="navbar-nav">
            {{ $currentPage := . }} {{ range .Site.Menus.main }} {{ if .HasChildren }}
            <li class="nav-item dropdown">
                <a class="nav-link dropdown-toggle" data-toggle="dropdown" href="#" id="themes" style="" aria-expanded="false">Themes <span class="caret"></span></a>
                <div class="dropdown-menu">
                    {{ range .Children }}
                    <a class="dropdown-item {{ if $currentPage.IsMenuCurrent " main " . }}active{{ end }}" href="{{ .URL }}">{{ .Name }}</a> {{ end }}
                </div>
            </li>
            {{ else }}
            <li class="nav-item {{ if $currentPage.HasMenuCurrent " main " . }}active{{ end }}">
                <a class="nav-link" href="{{ .URL }}">
                                    {{ .Pre }}
                                    <span>{{ .Name }}</span>
                                </a>
            </li>
            {{ end }} {{ end }}
        </ul>
    </div>
    </div>
    </div>
</nav>

<div class="expand-img">
    <div id="expand-img" class="expand-img-wrapper" style="display: none;">
        <img src="http://localhost:1313/images/RPI-GPIO.png"/>
        <button class="btn btn-primary btn-lg">X</button>
    </div>
</div>