diff --git a/_data/topnav.yml b/_data/topnav.yml
index d3dae49..175eb48 100644
--- a/_data/topnav.yml
+++ b/_data/topnav.yml
@@ -1,5 +1,7 @@
 ##
 ## if you want to list an external url, use external_url instead of url. the theme will apply a different link base.
-#subitems:
+subitems:
 #- title: Home
 #  url: /index
+- title: Back to How-to Hub
+  url: https://australianbiocommons.github.io/how-to-hub/index
diff --git a/_sass/_custom_classes.scss b/_sass/_custom_classes.scss
index cc5b9f0..bef0e13 100644
--- a/_sass/_custom_classes.scss
+++ b/_sass/_custom_classes.scss
@@ -42,3 +42,12 @@ h2 {
     }
 }
 
+/*-----As used in RDMkit-----*/
+/*-----Top navigation-----*/
+
+.navbar-nav .nav-item > a {
+    color: $white;
+    white-space: nowrap;
+    background-color: $primary;
+    border-radius: $border-radius;
+}