.ng-valid[required], .ng-valid.required  {
    border-left: 5px solid #42A948; /* green */
  }
  
  .ng-invalid:not(form)  {
    border-left: 5px solid #a94442; /* red */
  }
  
  
  /*
  Copyright Google LLC. All Rights Reserved.
  Use of this source code is governed by an MIT-style license that
  can be found in the LICENSE file at https://angular.io/license
  */