Bug fixes and improvements (#1078)

* Fix the logo in the en version

* Optimize header color and fix body background color

* Update theme switch's name

* Fix backfrop-filter on Safari

* Update some animation's file name for adding egde when cropping

* Re-count the comments number

* A bug fix in n_queens_problem.md

mkdocs.yml

@@ -46,16 +46,16 @@ theme:
   palette:
     - scheme: default
       primary: white
-      # accent: indigo
+      accent: teal
       toggle:
         icon: material/theme-light-dark
-        name: Switch to dark mode
+        name: 深色模式
     - scheme: slate
-      primary: grey
-      # accent: indigo
+      primary: black
+      accent: teal
       toggle:
         icon: material/theme-light-dark
-        name: Switch to light mode
+        name: 浅色模式
   font:
     text: Noto Sans SC
     code: Fira Code