style.scss in plainwhite-0.10

- old
+ new

@@ -1,4 +1,8 @@
 ---
 ---
 
-@import "plain";
\ No newline at end of file
+@import "plain";
+{%- if site.plainwhite.dark_mode -%}
+  @import "toggle";
+  @import "dark";
+{%- endif -%}