message: fix(theme): fix navbar dropdown style
diff: &:hover,
  &.open {
  .nav-dropdown {
  + padding: 0.5rem;
  z-index: 2;
  transform: scale(1);
  visibility: visible;
  .dropdown-subtitle {
  margin: 0;
  - padding: 0.75rem 1rem 0.25rem 0.75rem;
  + padding: 0 0.25rem;
  color: var(--dark-grey);
  - font-size: 0.9rem;
  + font-size: 0.75rem;
  + font-weight: bold;
  + line-height: 2;
  + text-transform: uppercase;
  .nav-link {
  padding: 0;
  display: block;
  position: relative;
  margin-bottom: 0;
  - padding: 0 1.5rem 0 1.25rem;
  + padding-left: 0.25rem;
  border-bottom: none;
  color: var(--dark-grey);
  font-weight: 400;
  }
  .dropdown-subitem {
  + padding-left: 0.5rem;
  font-size: 0.9em;
  }
  }
  