.navigation-clean-button {
  background: #fff;
  padding-top: .75rem;
  padding-bottom: .75rem;
  color: #333;
  border-radius: 0;
  box-shadow: none;
  border: none;
  margin-bottom: 0;
}

@media (min-width:768px) {
  .navigation-clean-button {
    padding-top: 1rem;
    padding-bottom: 1rem;
  }
}