diff --git a/_extensions/seedcase-project/seedcase-theme/_extension.yml b/_extensions/seedcase-project/seedcase-theme/_extension.yml
index bfcd2ea5..2c59fb5a 100644
--- a/_extensions/seedcase-project/seedcase-theme/_extension.yml
+++ b/_extensions/seedcase-project/seedcase-theme/_extension.yml
@@ -7,7 +7,7 @@ contributes:
     html:
       from: markdown+emoji
       theme:
-        - zephyr
+        - cosmo
         - theme.scss
       toc: true
       toc-location: right
@@ -19,12 +19,16 @@ contributes:
       execute-dir: project
 
     website:
+      page-navigation: true
+      favicon: favicon.ico
       repo-branch: main
       repo-actions: [edit, issue, source]
       search:
         location: navbar
         type: overlay
+      navbar:
+        logo: logo.png
     
     csl: vancouver.csl
 
-    format: seedcase-theme-html
\ No newline at end of file
+    format: seedcase-theme-html
diff --git a/_extensions/seedcase-project/seedcase-theme/android-chrome-192x192.png b/_extensions/seedcase-project/seedcase-theme/android-chrome-192x192.png
new file mode 100644
index 00000000..75d92b20
Binary files /dev/null and b/_extensions/seedcase-project/seedcase-theme/android-chrome-192x192.png differ
diff --git a/_extensions/seedcase-project/seedcase-theme/android-chrome-512x512.png b/_extensions/seedcase-project/seedcase-theme/android-chrome-512x512.png
new file mode 100644
index 00000000..95bd9065
Binary files /dev/null and b/_extensions/seedcase-project/seedcase-theme/android-chrome-512x512.png differ
diff --git a/_extensions/seedcase-project/seedcase-theme/apple-touch-icon.png b/_extensions/seedcase-project/seedcase-theme/apple-touch-icon.png
new file mode 100644
index 00000000..8bba0161
Binary files /dev/null and b/_extensions/seedcase-project/seedcase-theme/apple-touch-icon.png differ
diff --git a/_extensions/seedcase-project/seedcase-theme/favicon-16x16.png b/_extensions/seedcase-project/seedcase-theme/favicon-16x16.png
new file mode 100644
index 00000000..1958ca50
Binary files /dev/null and b/_extensions/seedcase-project/seedcase-theme/favicon-16x16.png differ
diff --git a/_extensions/seedcase-project/seedcase-theme/favicon-32x32.png b/_extensions/seedcase-project/seedcase-theme/favicon-32x32.png
new file mode 100644
index 00000000..a30619ed
Binary files /dev/null and b/_extensions/seedcase-project/seedcase-theme/favicon-32x32.png differ
diff --git a/_extensions/seedcase-project/seedcase-theme/favicon.ico b/_extensions/seedcase-project/seedcase-theme/favicon.ico
new file mode 100644
index 00000000..b3136166
Binary files /dev/null and b/_extensions/seedcase-project/seedcase-theme/favicon.ico differ
diff --git a/_extensions/seedcase-project/seedcase-theme/logo.png b/_extensions/seedcase-project/seedcase-theme/logo.png
new file mode 100644
index 00000000..ef7e7ee8
Binary files /dev/null and b/_extensions/seedcase-project/seedcase-theme/logo.png differ
diff --git a/_extensions/seedcase-project/seedcase-theme/site.webmanifest b/_extensions/seedcase-project/seedcase-theme/site.webmanifest
new file mode 100644
index 00000000..45dc8a20
--- /dev/null
+++ b/_extensions/seedcase-project/seedcase-theme/site.webmanifest
@@ -0,0 +1 @@
+{"name":"","short_name":"","icons":[{"src":"/android-chrome-192x192.png","sizes":"192x192","type":"image/png"},{"src":"/android-chrome-512x512.png","sizes":"512x512","type":"image/png"}],"theme_color":"#ffffff","background_color":"#ffffff","display":"standalone"}
\ No newline at end of file
diff --git a/_extensions/seedcase-project/seedcase-theme/theme.scss b/_extensions/seedcase-project/seedcase-theme/theme.scss
index b196bd8a..1f045224 100644
--- a/_extensions/seedcase-project/seedcase-theme/theme.scss
+++ b/_extensions/seedcase-project/seedcase-theme/theme.scss
@@ -1,13 +1,19 @@
 /*-- scss:defaults --*/
 
-@import url('https://fonts.googleapis.com/css2?family=Poppins');
-@import url('https://fonts.googleapis.com/css2?family=Lato');
+@import url('https://fonts.googleapis.com/css2?family=Noto Sans');
 @import url('https://fonts.googleapis.com/css2?family=Fira+Code');
+@import url('https://fonts.googleapis.com/css2?family=Maven+Pro');
 
-$font-family-sans-serif: "Lato", sans-serif;
+$font-family-sans-serif: "Maven Pro", sans-serif;
 $font-family-monospace: "Fira Code", monospace;
-$headings-font-family: "Poppins", sans-serif;
-$navbar-bg: #990032;
+$headings-font-family: "Noto Sans", sans-serif;
+
+/* brand colour #003224 - the one below is a slightly lighter version of the brand colour */
+$primary: #196440;
+$secondary: #C6F0D3;
+$toc-active-border: #8b8b8b;
+
+$navbar-padding-y: .2rem;
 
 /*-- scss:rules --*/
 
@@ -18,3 +24,7 @@ svg {
   height: auto !important;
   width: auto !important;
 }
+
+li {
+  margin: 5px 0;
+}