.contributorsList > ul > li {
  width: 40%;
}

@media (min-width: 600px) and (orientation: landscape) {
  .contributorsList > ul > li {
    width: 22%;
  }
}
@media (min-width: 800px) and (orientation: landscape) {
  .contributorsList > ul > li {
    width: 8%;
  }
}