#zone-branding .region-menu .content > ul.menu > li > ul, #zone-branding .region-menu .content > ul.menu > li li > ul {
  display: none;
}
#zone-branding .region-menu .content > ul.menu > li:hover > ul, #zone-branding .region-menu .content > ul.menu > li li:hover > ul {
  display: block;
}