How to remove white borders on xmonad


How to remove white frames from the browser, and how to change the global system theme to dark?

              __GL_GSYNC_ALLOWED = "1";
              __GL_SYNC_TO_VBLANK = "1";
              GDK_BACKEND = "x11";
              GTK_THEME = "Adwaita-dark";
              LIBVA_DRIVER_NAME = "nvidia";
              GBM_BACKEND = "nvidia";
              SDL_VIDEODRIVER = "x11";
              __GLX_VENDOR_LIBRARY_NAME = "nvidia";
              __GLX_RENDERER = "nvidia";
              TERMINAL = "kitty";
              DISABLE_QT5_COMPAT = "0";
              QT_STYLE_OVERRIDE= "kvantum";
              QT_QPA_PLATFORMTHEME="qt5ct";
              XDG_SESSION_TYPE = "x11";
              XDG_SESSION_DESKTOP = "xmonad";
              XDG_CURRENT_DESKTOP = "xmonad";

What DE/WM/compositor? Just noticed the xmonad, oops.

are there only borders alround your browser, or alround all windows?

if its about all windows, just append myBorderWidth = 0 to your config to remove borders.
(didnt test that, just used xmonad once)

are you not using haskell to configure xmonad? doesnt look like it - this line is for ~/.config/xmonad/xmonad.hs.