framework/less/lib/Form.less

.Form--centered {
  text-align: center;

  .FormControl, .Button {
    margin: 0 auto;
    text-align: center;
    height: 50px;
    padding: 15px 20px;
    font-size: 15px;
  }
}

.Form-group {
  margin-bottom: 12px;

  &:last-child {
    margin-bottom: 0;
  }
}

.Form-group label {
  font-size: 14px;
  font-weight: bold;
  margin-bottom: 10px;
  color: @text-color;
  display: block;
}