#submenu-top {
  width: 100%;
  background: #333;
  box-shadow: 0 0 0 #1b1c1d;
}

#submenu-top .popup {
  margin-top: 0;
}

#submenu-top .menu {
  min-height: 0;
  margin-top: 0;
}

#submenu-top .menu.first-level>.item {
  margin-right: 0;
  color: #fff;
  font-size: 14.0px;
}

#submenu-top .menu.first-level>.item:not(:first-child) {
  margin-left: 0;
}

#submenu-top .menu.first-level>.item::after {
  content: ' ';
  position: absolute;
  width: 100%;
  height: 0;
  background: red;
  left: 0;
  bottom: 0;
  transition: 250ms;
}

#submenu-top .menu.first-level>.item:hover::after {
  height: 3px;
  transition: 250ms;
}