fix: hover detection doesn't work with Firefox mobile

frontend/src/styles/tailwind.css

@@ -1,2 +1,3 @@
 @import "tailwindcss" prefix(tw) source("../../../app/templates/");
 @custom-variant dark (&:where([data-bs-theme=dark], [data-bs-theme=dark] *));
+@custom-variant hover (&:hover);