Update pkgdown layout

_pkgdown.yml

@@ -6,7 +6,7 @@ home:
 
 template:
   bootstrap: 5
-  bootswatch: cosmo
+  light-switch: true
   params:
     ganalytics: G-BF9VGFNZ4C
 
@@ -15,7 +15,6 @@ authors:
     href: https://moosa-r.com/
 
 navbar:
-  bg: secondary
   structure:
     left:
     - home
@@ -25,12 +24,11 @@ navbar:
     - tutorials
     - news
     right:
+    - search
     - github
     - portfolio
+    - lightswitch
   components:
-    home:
-      icon: fas fa-home fa-lg
-      href: index.html
     reference:
       text: Functions
       href: reference/index.html
@@ -66,6 +64,7 @@ navbar:
     github:
       icon: fab fa-github fa-lg
       href: https://github.com/moosa-r/rbioapi/
+      aria-label: GitHub
     portfolio:
       icon: fa-solid fa-id-card
       href: https://moosa-r.com/