.nnn-nav .menu-item a {
  border-color: transparent;
  border-color: rgba(0,0,0,0);
}
.nnn-nav ul ul.sub-menu .sub-toggle {
  border: 1px solid rgba(0,0,0,0.15);
}
.nnn-nav .menu-item a:hover,
.nnn-nav .current-page.menu-item a {
  background-color: rgba(0,0,0,0.05);
}