diff --git a/about_pages_dark_mode/about_preferences_dark_mode.css b/about_pages_dark_mode/about_preferences_dark_mode.css
deleted file mode 100644
index f764620..0000000
--- a/about_pages_dark_mode/about_preferences_dark_mode.css
+++ /dev/null
@@ -1,26 +0,0 @@
-@-moz-document url-prefix(about:preferences) {
-
-	page {
-		filter: invert(80%) hue-rotate(150deg);
-		background-color: #323234 !important;
-	}
-
-	#categories, .search-container {
-		background-color: white !important;
-	}
-
-	.category[selected], .category:hover {
-		background-color: #E9E9E9 !important;
-		color: #323234 !important;
-		-moz-border-start: unset !important;
-	}
-
-	#tabsElement tab[selected] {
-		-moz-border-bottom-colors: #323234 !important;
-	}
-
-	.help-button {
-		display: none !important;
-	}
-
-}
\ No newline at end of file