diff --git a/_brand.yml b/_brand.yml
index 50faec5..10925fd 100644
--- a/_brand.yml
+++ b/_brand.yml
@@ -79,6 +79,13 @@ typography:
     weight: 400
     decoration: "underline"
 
+## The following may change in the future
+## Keep an eye on the Quarto documentation for updates and monitor
+## https://github.com/quarto-dev/quarto-cli/pull/11378
+defaults:
+  bootstrap:
+    navbar-bg: $brand-cardinal
+
 #logo:
 #  small:
 #    light: "./assets/block-s.png"
diff --git a/_custom.scss b/_custom.scss
deleted file mode 100644
index 7cbaf24..0000000
--- a/_custom.scss
+++ /dev/null
@@ -1,2 +0,0 @@
-/*-- scss:defaults --*/
-$navbar-bg: $brand-cardinal; 
\ No newline at end of file
diff --git a/_quarto.yml b/_quarto.yml
index ff3d967..5db4e78 100644
--- a/_quarto.yml
+++ b/_quarto.yml
@@ -21,7 +21,7 @@ format:
   html:
     toc: true
     theme:
-      - custom.scss
+      - brand
 
 # Use the brand file for all documents in the project
 brand: _brand.yml