vincentbernat.i3wm-configuration/dotfiles/gtk3.css

/* Useless: we cannot override properly by unbinding some keys */
/* @import url("/usr/share/themes/Emacs/gtk-3.0/gtk-keys.css"); */

@binding-set custom-text-entry
{
  bind "<alt>b" { "move-cursor" (words, -1, 0) };
  bind "<shift><alt>b" { "move-cursor" (words, -1, 1) };
  bind "<alt>f" { "move-cursor" (words, 1, 0) };
  bind "<shift><alt>f" { "move-cursor" (words, 1, 1) };

  bind "<ctrl>a" { "move-cursor" (paragraph-ends, -1, 0) };
  bind "<shift><ctrl>a" { "move-cursor" (paragraph-ends, -1, 1) };
  bind "<ctrl>e" { "move-cursor" (paragraph-ends, 1, 0) };
  bind "<shift><ctrl>e" { "move-cursor" (paragraph-ends, 1, 1) };

  bind "<ctrl>y" { "paste-clipboard" () };

  bind "<ctrl>k" { "delete-from-cursor" (paragraph-ends, 1) };
  bind "<ctrl>u" { "move-cursor" (paragraph-ends, -1, 0)
                   "delete-from-cursor" (paragraph-ends, 1) };
  bind "<alt>backslash" { "delete-from-cursor" (whitespace, 1) };
  bind "<alt>BackSpace" { "delete-from-cursor" (word-ends, -1) };

  bind "<alt>space" { "delete-from-cursor" (whitespace, 1)
                      "insert-at-cursor" (" ") };
  bind "<alt>KP_Space" { "delete-from-cursor" (whitespace, 1)
                         "insert-at-cursor" (" ")  };
}

entry, textview
{
  -gtk-key-bindings: custom-text-entry;
}

/* Don't use shadows, border radius, etc */
tooltip, menu {
  margin: 0;
  border-width: 0;
  border-radius: 0;
  box-shadow: none;
}