Fix empty content icons on darktheme

Signed-off-by: Joas Schilling <coding@schilljs.com>

apps/accessibility/css/themedark.scss

@@ -42,7 +42,8 @@ $color-border-dark: lighten($color-main-background, 14%);
 
 // since svg icons are inverted, revert to white for the header
 .header-right > * {
-	[class^='icon-'], [class*=' icon-'] {
+	>[class^='icon-'],
+	>[class*=' icon-'] {
 		filter: invert(100%);
 	}
 }