Conference Survey Email

<amp-img class="m1"
  width="600"
  height="314"
  layout="responsive"
  src="https://amp.dev/static/img/sharing/default-600x314.png"></amp-img>
<p>It’s been a busy few days at the latest AMP conference. We hope you had a good time!</p>

<form method="post"
  action-xhr="https://amp.dev/documentation/examples/api/submit-form-input-text-xhr">
  <div class="m1">
    <p>How would you rate this year's conference?</p>

    <input type="radio"
      id="rating1"
      name="rating"
      value="3"
      on="change:step2.show"
      required>
    <label for="rating1">Great</label>

    <input type="radio"
      id="rating2"
      name="rating"
      value="2"
      on="change:step2.show">
    <label for="rating2">Not bad</label>

    <input type="radio"
      id="rating3"
      name="rating"
      value="1"
      on="change:step2.show">
    <label for="rating3">Meh</label>
  </div>
  <div class="m1"
    id="step2"
    hidden>
    <label class="block"
      for="info">Would you like to tell us more?</label>
    <textarea class="block"
      id="info"
      name="name"
      rows="5"></textarea>
  </div>
  <input type="submit"
    value="Send feedback">
  <input type="reset"
    value="Clear">

  <div class="m1"
    submit-success>
    Thank you for submitting feedback.
  </div>
</form>