[i3] Remove window borders

config/i3/config

@@ -15,7 +15,9 @@ set $mod Mod4
 # is used in the bar {} block below.
 font pango:Hack 8
 
+# Remove borders
 hide_edge_borders both
+for_window [class=".*"] border pixel 1
 
 # This font is widely installed, provides lots of unicode glyphs, right-to-left
 # text rendering and scalability on retina/hidpi displays (thanks to pango).