diff --git a/i3_config b/i3_config
index 161d0a4..e94f378 100644
--- a/i3_config
+++ b/i3_config
@@ -119,29 +119,31 @@ bindsym $mod+Shift+c reload
 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+z exec "bash -c 'until slock; do :; done'"
 
 # resize window (you can also use the mouse for that)
 mode "resize" {
-        # These bindings trigger as soon as you enter the resize mode
+	# These bindings trigger as soon as you enter the resize mode
 
-        # Pressing left will shrink the window’s width.
-        # Pressing right will grow the window’s width.
-        # Pressing up will shrink the window’s height.
-        # Pressing down will grow the window’s height.
-        bindsym h resize shrink width 10 px or 10 ppt
-        bindsym j resize grow height 10 px or 10 ppt
-        bindsym k resize shrink height 10 px or 10 ppt
-        bindsym l resize grow width 10 px or 10 ppt
+	# Pressing left will shrink the window’s width.
+	# Pressing right will grow the window’s width.
+	# Pressing up will shrink the window’s height.
+	# Pressing down will grow the window’s height.
+	bindsym h resize shrink width 10 px or 10 ppt
+	bindsym j resize grow height 10 px or 10 ppt
+	bindsym k resize shrink height 10 px or 10 ppt
+	bindsym l resize grow width 10 px or 10 ppt
 
-        # same bindings, but for the arrow keys
-        bindsym Left resize shrink width 10 px or 10 ppt
-        bindsym Down resize grow height 10 px or 10 ppt
-        bindsym Up resize shrink height 10 px or 10 ppt
-        bindsym Right resize grow width 10 px or 10 ppt
+	# same bindings, but for the arrow keys
+	bindsym Left resize shrink width 10 px or 10 ppt
+	bindsym Down resize grow height 10 px or 10 ppt
+	bindsym Up resize shrink height 10 px or 10 ppt
+	bindsym Right resize grow width 10 px or 10 ppt
 
-        # back to normal: Enter or Escape
-        bindsym Return mode "default"
-        bindsym Escape mode "default"
+	# back to normal: Enter or Escape
+	bindsym Return mode "default"
+	bindsym Escape mode "default"
 }
 
 bindsym $mod+r mode "resize"
@@ -149,7 +151,8 @@ bindsym $mod+r mode "resize"
 # Start i3bar to display a workspace bar (plus the system information i3status
 # finds out, if available)
 bar {
-        status_command i3status
+	position top
+	status_command i3status
 }
 
 new_window pixel 1