Form Validation
Custom styles
              For custom Bootstrap form validation messages, you’ll need to add the
              novalidate
              boolean attribute to your
              <form>.
            
Valid Status
                  You can denote a valid status by applying a helper text with the class
                  .valid-feedback.
                
Invalid Status
                  You can denote a invalid status by applying a helper text with the class
                  .invalid-feedback.
                
Supported elements
Validation styles are available for the following form controls and components.
Tooltips
              If your form layout allows it, you can swap the
              .{valid|invalid}-feedback classes for
              .{valid|invalid}-tooltip classes to display validation feedback in a
              styled tooltip. Be sure to have a parent with position: relative on it
              for tooltip positioning. In the example below, our column classes have this already,
              but your project may require an alternative setup.