form-group">
              <label class="form-col-form-label" for="inputSuccess2">Input is valid</label>
              <input type="text" class="form-control is-valid" id="inputSuccess2">
            </div>
            <div class="form-group">
              <label class="form-col-form-label" for="inputError2">Input required</label>
              <input type="text" class="form-control" id="inputError2" required>
              <div class="invalid-feedback">
                Please provide a valid informations.