.nav-link {
  color: white;
}

.navbar {
  background-color: rgba(0,38,84,0.4);
  -webkit-transition: background-color 500ms linear;
  -moz-transition: background-color 500ms linear;
  -ms-transition: background-color 500ms linear;
  transition: background-color 500ms linear;
  height: 80px;
}

.scrolled {
  background-color: rgba(0,38,84,1);
  -webkit-transition: background-color 500ms linear;
  -moz-transition: background-color 500ms linear;
  -ms-transition: background-color 500ms linear;
  transition: background-color 500ms linear;
  height: 60px;
}