.oauth-login .provider a {
  min-width: 20px;
  min-height: 20px;
  background-size: 20px;
  display: inline-block;
  text-decoration: none;
  background-repeat: no-repeat;
  line-height: 20px;
}
.oauth-login .provider a img {
  max-width: 40px;
}
.oauth-login .provider a:hover {
  opacity: 0.7;
}
.oauth-login .provider .developer {
  display: none;
}