added firefox user config

.config/i3/config

@@ -108,7 +108,7 @@ bindsym XF86AudioPlay exec playerctl play-pause
 bindsym $mod+XF86AudioRaiseVolume exec playerctl next
 bindsym $mod+XF86AudioLowerVolume exec playerctl previous
 bindsym XF86AudioNext exec playerctl next
-bindsym XF86AudioPrevious exec playerctl previous
+bindsym XF86AudioPrev exec playerctl previous
 
 # misc keyboard keys
 bindsym XF86Calculator exec --no-startup-id qalculate-gtk
@@ -305,6 +305,9 @@ bindsym $mod+Shift+r restart
 # exit i3 (logs you out of your X session)
 # bindsym $mod+Shift+e exec "i3-nagbar -t warning -m 'You pressed the exit shortcut. Do you really want to exit i3? This will end your X session.' -b 'Yes, exit i3' 'i3-msg exit'"
 
+# Lock screen
+bindsym $mod+$alt+l exec --no-startup-id light-locker-command -l
+
 # Set shut down, restart and locking features
 bindsym $mod+Shift+Ctrl+$alt+h exec --no-startup-id systemctl hibernate
 bindsym $mod+Shift+Ctrl+$alt+s exec --no-startup-id systemctl suspend
@@ -348,9 +351,6 @@ mode "resize" {
         bindsym Escape mode "default"
 }
 
-# Lock screen
-bindsym Ctrl+$alt+l exec --no-startup-id light-locker-command -l
-
 # Autostart applications
 exec_always --no-startup-id $HOME/.config/polybar/launch.sh
 exec --no-startup-id nitrogen --restore; sleep 1; picom --config ~/.config/picom/picom.conf
@@ -365,6 +365,9 @@ exec --no-startup-id blueman-applet
 exec --no-startup-id numlockx
 exec --no-startup-id xbindkeys
 
+# set x background
+exec --no-startup-id xsetroot -solid black
+
 
 # Color palette used for the terminal ( ~/.Xresources file )
 # Colors are gathered based on the documentation:

.xprofile##class.arch_desktop

@@ -5,4 +5,5 @@ xrdb -merge ~/.Xresources &
 
 systemd-run --user --on-calendar=minutely --unit=polybar_auto_hide /usr/bin/polybar-msg cmd hide &
 
-sleep 10 & xset s 300 0 & xset s noblank & xset -dpms & xsetroot -solid black &
+xset s 300 0 & xset s noblank & xset -dpms & xsetroot -solid black &
+xset-root -solid black &