docs.swarmlab.io/public/stylesheets/Navigation-with-Button.css

.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;
  }
}

.navigation-clean-button .navbar-brand {
  font-weight: bold;
  color: inherit;
}

.navigation-clean-button .navbar-brand:hover {
  color: #222;
}

.navigation-clean-button.navbar-dark .navbar-brand:hover {
  color: #f0f0f0;
}

.navigation-clean-button .navbar-brand img {
  height: 100%;
  display: inline-block;
  margin-right: 10px;
  width: auto;
}

.navigation-clean-button .navbar-toggler {
  border-color: #ddd;
}

.navigation-clean-button .navbar-toggler:hover, .navigation-clean-button .navbar-toggler:focus {
  background: none;
}

.navigation-clean-button.navbar-dark .navbar-toggler {
  border-color: #555;
}

.navigation-clean-button .navbar-toggler {
  color: #888;
}

.navigation-clean-button.navbar-dark .navbar-toggler {
  color: #eee;
}

.navigation-clean-button .navbar-collapse, .navigation-clean-button .form-inline {
  border-top-color: #ddd;
}

.navigation-clean-button.navbar-dark .navbar-collapse, .navigation-clean-button.navbar-dark .form-inline {
  border-top-color: #333;
}

.navigation-clean-button .navbar-nav a.active, .navigation-clean-button .navbar-nav > .show > a {
  background: none;
  box-shadow: none;
}

.navigation-clean-button.navbar-light .navbar-nav a.active, .navigation-clean-button.navbar-light .navbar-nav a.active:focus, .navigation-clean-button.navbar-light .navbar-nav a.active:hover {
  color: #8f8f8f;
  box-shadow: none;
  background: none;
  pointer-events: none;
}

.navigation-clean-button.navbar .navbar-nav .nav-link {
  padding-left: 18px;
  padding-right: 18px;
}

.navigation-clean-button.navbar-light .navbar-nav .nav-link {
  color: #465765;
}

.navigation-clean-button.navbar-light .navbar-nav .nav-link:focus, .navigation-clean-button.navbar-light .navbar-nav .nav-link:hover {
  color: #37434d !important;
  background-color: transparent;
}

.navigation-clean-button .navbar-nav > li > .dropdown-menu {
  margin-top: -5px;
  box-shadow: 0 4px 8px rgba(0,0,0,.1);
  background-color: #fff;
  border-radius: 2px;
}

.navigation-clean-button .dropdown-menu .dropdown-item:focus, .navigation-clean-button .dropdown-menu .dropdown-item {
  line-height: 2;
  font-size: 14px;
  color: #37434d;
}

.navigation-clean-button .dropdown-menu .dropdown-item:focus, .navigation-clean-button .dropdown-menu .dropdown-item:hover {
  background: #eee;
  color: inherit;
}

@media (max-width:767px) {
  .navigation-clean-button .navbar-nav .show .dropdown-menu {
    box-shadow: none;
  }
}

@media (max-width:767px) {
  .navigation-clean-button .navbar-nav .show .dropdown-menu .dropdown-item {
    color: #37434d;
    padding-top: 12px;
    padding-bottom: 12px;
    line-height: 1;
  }
}

.navigation-clean-button.navbar-dark {
  background-color: #1f2021;
  color: #fff;
}

.navigation-clean-button.navbar-dark .navbar-nav a.active, .navigation-clean-button.navbar-dark .navbar-nav a.active:focus, .navigation-clean-button.navbar-dark .navbar-nav a.active:hover {
  color: #8f8f8f;
  box-shadow: none;
  background: none;
  pointer-events: none;
}

.navigation-clean-button.navbar-dark .navbar-nav .nav-link {
  color: #dfe8ee;
}

.navigation-clean-button.navbar-dark .navbar-nav .nav-link:focus, .navigation-clean-button.navbar-dark .navbar-nav .nav-link:hover {
  color: #fff !important;
  background-color: transparent;
}

.navigation-clean-button.navbar-dark .navbar-nav > li > .dropdown-menu {
  background-color: #1f2021;
}

.navigation-clean-button.navbar-dark .dropdown-menu .dropdown-item:focus, .navigation-clean-button.navbar-dark .dropdown-menu .dropdown-item {
  color: #f2f5f8;
}

.navigation-clean-button.navbar-dark .dropdown-menu .dropdown-item:focus, .navigation-clean-button.navbar-dark .dropdown-menu .dropdown-item:hover {
  background: #363739;
}

@media (max-width:767px) {
  .navigation-clean-button.navbar-dark .navbar-nav .show .dropdown-menu .dropdown-item {
    color: #fff;
  }
}

.navigation-clean-button .actions .login {
  margin-right: 1rem;
  text-decoration: none;
  color: #465765;
}

.navigation-clean-button.navbar-dark .actions .login {
  color: #dfe8ee;
}

.navigation-clean-button.navbar-dark .actions .login:hover {
  color: #fff;
}

.navigation-clean-button .navbar-text .action-button, .navigation-clean-button .navbar-text .action-button:active, .navigation-clean-button .navbar-text .action-button:hover {
  background: #56c6c6;
  border-radius: 20px;
  font-size: inherit;
  color: #fff;
  box-shadow: none;
  border: none;
  text-shadow: none;
  padding: .5rem 1rem;
  transition: background-color 0.25s;
  font-size: inherit;
}

.navigation-clean-button .navbar-text .action-button:hover {
  background: #66d7d7;
}

.navigation-clean-button.navbar-dark .action-button, .navigation-clean-button.navbar-dark .action-button:active {
  background: #208f8f;
}

.navigation-clean-button.navbar-dark .action-button:hover {
  background: #269d9d;
}