Disable all Bars I3

[nigelwarning]

So, most of the applications don’t have a bar. But for example, I go to preferences in VLC. It has a bar which says ‘Simple Preferences’
How can I disable this?

Already thanks!

[flyingcakes]

for_window [class="^.*"] border pixel 1

Try adding this to ~/.config/i3/config

Edit

This doesn’t remove title bar when you have multiple windows in tab or stack layout.

[Shjim]

like this ?

[flyingcakes]

I suppose they want like this

[joekamprad]

# default window borders
default_border none
default_floating_border 1pixel

# Hides vertical and horizontal borders when there's only one window.
hide_edge_borders both

i have here.