.footer-world-map {
  background-color: #000;
  background-image:
    linear-gradient(rgba(0,0,0,0.85), rgba(0,0,0,0.85)),
    url('../images/world-map.png');

  background-repeat: no-repeat;
  background-position: center;
  background-size: cover;
}

.footer-world-map--cover {
  background-size: cover;
}