config-kitty/kitty.conf

font_size 20.0

# > [...] used only for browsing the scrollback buffer (in MB). [...]
# > The current implementation stores one character in 4 bytes,
# > so approximatively 2500 lines per megabyte at 100 chars per line.
# https://sw.kovidgoyal.net/kitty/conf.html#opt-kitty.scrollback_pager_history_size
# https://sw.kovidgoyal.net/kitty/conf.html#shortcut-kitty.Browse-scrollback-buffer-in-less
scrollback_pager_history_size 16

# red border in i3 (termite's `urgent_on_bell`)
window_alert_on_bell yes