diff --git a/macao/assets/_custom.scss b/macao/assets/_custom.scss
index 5162764b4668d3f397c6adee6f90fac42efcf38e..0bd9d02b4d25c82627480742a3f79fd47f6ffbe0 100644
--- a/macao/assets/_custom.scss
+++ b/macao/assets/_custom.scss
@@ -4,6 +4,8 @@ body {
   --quizz-backgourd-color: #00000;
   --feedback-sucess-color: lightgreen;
   --feedback-error-color: #ef5d5d;
+
+  // To edit HUGO theme colors see macao/themes/macao-hugo-theme/assets/themes/_tetras.scss
 }
 
 // ***********************************
@@ -71,3 +73,12 @@ select.sd-dropdown.inline-dropdown, input.sd-input.inline-input {
     margin-top: 0;
   }
 }
+
+// ***********************************
+// General look and feel
+// ***********************************
+.book-page > article {
+  background-color: white;
+  padding: 16px;
+  border-radius: 20px;
+}
diff --git a/macao/hugo.toml b/macao/hugo.toml
index 8402f1a1476a2aa92a0d52cd7aa30c3d0ceac36e..4d4f11840195e96f934d655fbebb6fd3b753c834 100644
--- a/macao/hugo.toml
+++ b/macao/hugo.toml
@@ -22,7 +22,7 @@ weight = 10
 [params]
 # (Optional, default light) Sets color theme: light, dark or auto.
 # Theme 'auto' switches between dark and light modes based on browser/os preferences
-BookTheme = 'auto'
+BookTheme = 'tetras'
 
 # (Optional, default true) Controls table of contents visibility on right side of pages.
 # Start and end levels can be controlled with markup.tableOfContents setting.