add exposed link in main menu

layouts/partials/header.html

@@ -1,14 +1,17 @@
+{{ $currentPage := . }}
 <header>
   <h1>
-    <a href={{ .Site.BaseURL }}>{{ .Site.Title }}</a>
+    <a href="{{ $.Site.BaseURL }}">{{ .Site.Title }}</a>
   </h1>
-  {{ with .Site.Params.Description }}
+  {{ with $.Site.Params.Description }}
     {{ . }}
   {{ end }}
   <ul class="links">
-    {{ range .Site.Sections }}
+    {{ range $.Site.Sections }}
       <li class="link">
-          <a href="{{ .Permalink }}">{{ .Title | markdownify }}</a>
+        <a href="{{ .Permalink }}" class="{{ if eq $currentPage.Section .Section }}exposed{{ end }}">
+          {{ .Title | markdownify }} >
+        </a>
       </li>
     {{ end }}
   </ul>