Show currently selected nav item

sass/_nav.scss

@@ -61,6 +61,11 @@ nav {
 		display:flex;
 		justify-content:center;
 		background:$nav-background-secondary;
+
+		a.active {
+			color: $nav-anchor-hover-color;
+			background-color: $nav-background-primary;
+		}
 	}
 }
 

templates/macros.html

@@ -42,7 +42,11 @@
 {% macro subnav() %}
 <ul>
 	{% for item in config.extra.menu %}
-		<li><a href="{{ item.path }}">{{ item.name }}</a></li>
+		<li><a href="{{ item.path }}"
+			{% if item.path == current_path %}
+			   class="active"
+			{% endif %}
+		>{{ item.name }}</a></li>
 	{% endfor %}
 </ul>
 {% endmacro subnav %}