lighten dark background color

Author: tschortsch

src/app.css

@@ -11,7 +11,7 @@
 }
 
 .dark {
-	--background: #0f0f0f;
+	--background: #252525;
 	--foreground: #fff;
 	--muted: #a7a7a7;
 	--link: #2490e9;