diff --git a/hyprland/.config/hypr/conf/windowrules/default.conf b/hyprland/.config/hypr/conf/windowrules/default.conf
index d9626b4..fa8cab0 100644
--- a/hyprland/.config/hypr/conf/windowrules/default.conf
+++ b/hyprland/.config/hypr/conf/windowrules/default.conf
@@ -7,6 +7,10 @@ windowrulev2 = bordercolor rgb(FF0000) rgb(880808) 15deg,fullscreen:1
 windowrulev2 = animation popin,class:^(alacritty|Alacritty|pavucontrol|org.kde.polkit-kde-authentication-agent-1)$
 windowrulev2 = float,class:^(pavucontrol|wlogout|dunst|Dunst|org.kde.polkit-kde-authentication-agent-1)$
 
+# firefox rules :
+windowrulev2= float,class:^(Firefox)$,title:^(Library)$
+windowrulev2= animation popin,class:^(Firefox)$,title:^(Library)$
+
 # telegram rules :
 windowrulev2= float,class:^(org.telegram.desktop|telegramdesktop)$,title:^(Media viewer)$
 windowrulev2= animation popin,class:^(org.telegram.desktop|telegramdesktop)$