.logo-contributor {
  width: auto;
  height: auto;
  max-height: 60px;
  max-width: 100%;
}

@media (min-width: 576px) {
  .logo-contributor {
    max-height: 80px;
  }
}

@media (min-width: 992px) {
  .logo-contributor {
    max-height: 100px;
  }
}