@media all and (min-width: 992px) {
  .navbar .nav-item .dropdown-menu{ display: none; }
  .navbar .nav-item:hover .nav-link{ }
  .navbar .nav-item:hover .dropdown-menu{ display: block; }
  .navbar .nav-item .dropdown-menu{ margin-top:0; }
}

pre {
  padding: 5px;
  color: #4f70c5;
  border: 1px dashed #cccccc;
  border-left: 3px solid #f0ad4e;
}