private void btnEditCSS_Click(object sender, EventArgs e)
        {
            using (DialogSettingsCSS form = new DialogSettingsCSS(reinjectBrowserCSS)){
                if (form.ShowDialog(ParentForm) == DialogResult.OK)
                {
                    Config.CustomBrowserCSS      = form.BrowserCSS;
                    Config.CustomNotificationCSS = form.NotificationCSS;
                }

                reinjectBrowserCSS(Config.CustomBrowserCSS); // reinject on cancel too, because the CSS is updated while typing
            }
        }