My tmux configuration

.tmux.conf

run-shell "powerline-daemon -q"
source "$HOME/.local/lib/python3.8/site-packages/powerline/bindings/tmux/powerline.conf"

set -g default-terminal "xterm-256color"
# set-option -g default-command "/usr/local/bin/reattach-to-user-namespace -l /bin/zsh"
# install reattach-to-user-namespace first
# --> brew install reattach-to-user-namespace

new-session

# unbind the defualt tmux prefix key
unbind C-b
set-option -g prefix C-s
set-option -g renumber-windows on
set-window-option -g mode-keys vi
set -sg escape-time 0

bind-key   C-x      kill-pane
bind-key   C-s      last-window
bind-key   C-a      new-window -c '#{pane_current_path}'
bind-key   C-d      detach
bind-key   a        new-window -c '#{pane_current_path}'
bind-key   d        split-window   -h  -c '#{pane_current_path}'
bind-key   D        split-window   -v  -c '#{pane_current_path}'
bind-key   h        select-pane    -L
bind-key   j        select-pane    -D
bind-key   k        select-pane    -U
bind-key   l        select-pane    -R
bind-key   .        resize-pane    -R 5
bind-key   ,        resize-pane    -L 5
bind-key   [        resize-pane    -U 5
bind-key   ]        resize-pane    -D 5
bind-key   c        copy-mode

set -g pane-border-style fg=colour238
set -g pane-active-border-style "bg=default fg=colour238"