 < 3 ? 'page next' : 
             (slidingStepperPage > 3 ? 'page previous' : 'page active')"> 
        <h3>Success</h3>
        <p>You did it!</p>
    </section>
    <section class="page next" 
             [class]="slidingStepperPage < 4 ? 'page next' : 
             (slidingStepperPage > 4 ? 'page previous' : 'page active')"> 
      <h3>Something went wrong. </h3>
      <button on="tap:AMP.setState({ slidingStepperPage: 0 })" type="button">Try again</button>
    </section>
  </form>
</body>
</html>
