.form-control.is-invalid,
.checkbox-label input.is-invalid {
  border-color: #e53935;
  box-shadow: 0 0 0 3px rgba(229, 57, 53, 0.16);
}

.checkbox-label input.is-invalid {
  outline: 2px solid rgba(229, 57, 53, 0.35);
  outline-offset: 3px;
}