Vizzuality/landgriffon

.linkAnimation {
  text-decoration: none;
  background-image: linear-gradient(white 50%, white 50%);
  background-size: 10000px 1px;
  background-repeat: no-repeat;
  background-position: 0 1em;
  background-position: -10000px 1em;
}

.linkAnimation:hover {
  background-position: 0 1em;
  transition: background-position 2s ease-in-out;
}