.social-block {
  padding: 50px;
  background-color: #f1f1f1;
}
.social-block .alternativa,
.social .empregos {
  text-align: center;
  float: left;
  width: 50%;
}
.social-block .empregos {
  text-align: center;
}
.social-block .alternativa-online {
  border: 2px solid #fff;
  margin-right: 12px;
}
.social-block .alternativa-empregos {
  border: 2px solid #fff;
  margin-left: 12px;
}