.menu {
  background: #fff;
}
.menu a {
  color: #000;
}

.is-drilldown-submenu-parent > a:after {
  border-color: transparent transparent transparent #fff;
}

.js-drilldown-back > a:before {
  border-color: transparent #fff transparent transparent;
}

.dropdown.menu > li.is-dropdown-submenu-parent > a:after {
  border-color: #9b9b9b transparent transparent;
}

.is-dropdown-submenu .is-dropdown-submenu-parent.opens-right > a:after {
  border-color: transparent transparent transparent #9b9b9b;
}