.icon {
  display: inline-block;
  height: 1em;
  width: 1em;

  background-repeat: no-repeat;
  background-position: 50% 50%;
  background-size: contain;
}

.icon--facebook {
  background-image: url("../img/icons/icon-facebook.svg");
}

.icon--instagram {
  background-image: url("../img/icons/icon-instagram.svg");
}

.icon--bars {
  background-image: url("../img/icons/icon-bars.svg");
}