.nav-link {
  font-weight: bold;
  text-transform: uppercase;
  text-decoration: none;
  padding: 15px 0px;
  margin: 0px 5px;
  display: inline-block;
  position: relative;
  opacity: 0.75;
}

.nav-link:hover {
  opacity: 1;
}


.nav-link-ltr::before {
  width: 0%;
  bottom: 10px;
}

.nav-link-ltr:hover::before {
  width: 100%;
}

.nav-link-fade-up::before {
  width: 100%;
  bottom: 5px;
  opacity: 0;
}

.nav-link-fade-up:hover::before {
  bottom: 10px;
  opacity: 1;
}

.nav-link-grow-up::before {
  height: 0%;
  width: 100%;
  bottom: 0px;
}

.nav-link-grow-up:hover::before {
  height: 5px;
}