added dark mode

mkdocs.yml

@@ -4,6 +4,19 @@ theme:
   name: material
   features:
     - content.code.copy
+  palette: 
+
+    # Palette toggle for light mode
+    - scheme: default
+      toggle:
+        icon: material/brightness-7 
+        name: Switch to dark mode
+
+    # Palette toggle for dark mode
+    - scheme: slate
+      toggle:
+        icon: material/brightness-4
+        name: Switch to light mode
 extra_css:
   - pretty_quotes.css
 markdown_extensions: