i[class*="icon-"] {
  width: 16px;
  height: 16px;
  display: inline-block;
  vertical-align: middle;
}

i[class*="icon-large-"] {
  width: 24px;
  height: 24px;
}

i.icon-link {
  background-image: url("../img/octicons/link-16.svg");
}

i.icon-large-link {
  background-image: url("../img/octicons/link-24.svg");
}