diff --git a/pkgdown/_pkgdown.yml b/pkgdown/_pkgdown.yml
index da7863d..68e4da2 100644
--- a/pkgdown/_pkgdown.yml
+++ b/pkgdown/_pkgdown.yml
@@ -89,6 +89,7 @@ reference:
     - box_usage_linter
     - r6_usage_linter
     - unused_declared_object_linter
+    - namespaced_function_calls
   - title: Box Styling
     contents:
     - style_box_use_text
diff --git a/pkgdown/extra.css b/pkgdown/extra.css
index eb99fc5..139b7ed 100644
--- a/pkgdown/extra.css
+++ b/pkgdown/extra.css
@@ -14,6 +14,10 @@
   color: rgba(255, 255, 255, 0.8);
 }
 
+#navbar > ul.navbar-nav > li.nav-item > button {
+  color: rgba(255, 255, 255, 0.8);
+}
+
 .navbar-light .navbar-nav .active > .nav-link {
   background-color: var(--primary-color) !important;
   color: #fff !important;