Add focus child using disabled stacking shortcut, try with borders

.config/sway/config

@@ -112,7 +112,7 @@ bindsym $mod+Mod1+$down move workspace to output down
     # You can "split" the current object of your focus with
     # $mod+b or $mod+v, for horizontal and vertical splits
     # respectively.
-    bindsym $mod+s splith
+    bindsym $mod+b splith
     bindsym $mod+v splitv
 
     # Switch the current container between different layout styles
@@ -127,10 +127,11 @@ bindsym $mod+Mod1+$down move workspace to output down
     bindsym $mod+Shift+space floating toggle
 
     # Swap focus between the tiling area and the floating area
-    #bindsym $mod+space focus mode_toggle
+    bindsym $mod+Mod1+space focus mode_toggle
 
     # Move focus to the parent container
     bindsym $mod+a focus parent
+    bindsym $mod+s focus child
 #
 # Scratchpad:
 #
@@ -168,6 +169,28 @@ mode "resize" {
 }
 bindsym $mod+r mode "resize"
 
+mode "mark" {
+    # Retain moving focus
+    bindsym $mod+$left focus left
+    bindsym $mod+$down focus down
+    bindsym $mod+$up focus up
+    bindsym $mod+$right focus right
+
+    # Numbers now mark
+    bindsym $mod+1 mark one
+    bindsym $mod+2 mark two
+    bindsym $mod+3 mark three
+
+    # Shift numbers now swap current focus with marked window
+    bindsym $mod+Shift+1 swap container with mark one
+    bindsym $mod+Shift+2 swap container with mark two
+    bindsym $mod+Shift+3 swap container with mark three
+
+    # Return to default mode
+    bindsym Return mode "default"
+    bindsym Escape mode "default"
+}
+bindsym $mod+m mode "mark"
 #
 # Status Bar:
 #
@@ -226,17 +249,17 @@ smart_gaps on
 # Titlebars
 #
 font pango:monospace 12px
-default_border pixel 2
+#default_border pixel 2
 titlebar_border_thickness 2
 hide_edge_borders smart
 #
 # Colors #93cee9
 #
 # class                     border  backgr. text  indicator child_border
-    client.focused          #5e81ac #2e3440 #d8dee9 #5e81ac #5e81ac
+#    client.focused          #5e81ac #2e3440 #d8dee9 #5e81ac #5e81ac
-    client.focused_inactive #3b4252 #3b4252 #d8dee9 #4c566a #4c566a
+#    client.focused_inactive #3b4252 #3b4252 #d8dee9 #4c566a #4c566a
-    client.unfocused        #434c5e #434c5e #d8dee9 #4c566a #4c566a
+#    client.unfocused        #434c5e #434c5e #d8dee9 #4c566a #4c566a
-    client.urgent           #bf616a #bf616a #d8dee9 #d08770 #d08770
+#    client.urgent           #bf616a #bf616a #d8dee9 #d08770 #d08770
 
 
 # --------------------------------------------------- #
@@ -290,6 +313,5 @@ exec_always {
 
 #
 # App Specific Styling
-for_window [app_id="termite"] border pixel
+#for_window [app_id="termite"] border pixel
 for_window [app_id=pavucontrol] floating enable
-for_window [app_id=".*"] border pixel 4