system_helper.css

a.system.login.twitter {
  background-image: url('./images/login-twitter.png');
  background-repeat: no-repeat;
  padding-left: 20px;
  padding-bottom: 5px;
}
a.system.user.twitter {
  border: none;
  text-decoration: none;
}
a.system.user.twitter img {
  padding-right: 3px;
  vertical-align: middle;
}
a.system.user.twitter span {
  padding-left: 3px;
}
a.system.user.undefined {
  background-image: url('./images/user-undefined.png');
  background-repeat: no-repeat;
  padding-left: 20px;
  padding-bottom: 5px;
}