pension-app/styles/argon-dashboard-2.0.4/assets/scss/argon-dashboard/forms/_inputs.scss

.form-control{
  &.is-invalid{
    &:focus{
      box-shadow: 0 0 0 2px rgba($form-feedback-invalid-color, .6);
    }
  }

  &.is-valid{
    &:focus{
      box-shadow: 0 0 0 2px rgba($form-feedback-valid-color, .65);
    }
  }
}