fix(users): fix styles for login page

Signed-off-by: SphericalKat <amolele@gmail.com>

lib/ketbin_web/controllers/user_auth.ex

@@ -34,6 +34,7 @@ defmodule KetbinWeb.UserAuth do
     |> put_session(:user_token, token)
     |> put_session(:live_socket_id, "users_sessions:#{Base.url_encode64(token)}")
     |> maybe_write_remember_me_cookie(token, params)
+    |> put_flash(:info, "Logged in successfully!")
     |> redirect(to: user_return_to || signed_in_path(conn))
   end