Add theme

mkdocs.yml

@@ -3,6 +3,17 @@ site_url : https://SailorUpiter.github.io/mkdocs
 repo_url: https://github.com/SailorUpiter/mkdocs.git
 theme:
   name: material
+  palette:
+  - media: "(prefers-color-scheme: light)"
+    scheme: default
+    toggle:
+      icon: material/brightness-4
+      name: Темное оформление
+  - media: "(prefers-color-scheme: dark)"
+    scheme: slate
+    toggle:
+      icon: material/brightness-7
+      name: Светлое оформление
   language: ru
   icon:
     repo: fontawesome/brands/github