.text-center {
  text-align: center;
}
.logo {
  margin-top: 0px;
  width:100%;
  height:auto
}
.header h2 {
  color: #333;
  margin-top: 10px;
  margin-bottom: 10px;
}
.has-error .help-block {
  font-size: 1rem;
  color: #ff0000;
}