Wordpress Comment Form for Google AMP Pages

comment-form-with-errors.php

<form method="post" id="commentform" target="_top" class="comment-form" novalidate="" action-xhr="<?php echo admin_url('admin-ajax.php?action=amp_comment_submit') ?>" target="_top">
  <p class="comment-notes">
    <span id="email-notes">Your email address will not be published.</span> Required fields are marked <span class="required">*</span>
  </p>
  <p class="comment-form-comment">
    <label for="comment">Comment</label> 
    <textarea id="comment" name="comment" cols="45" rows="8" maxlength="65525" aria-required="true" required="required"></textarea>
  </p>
  <p class="comment-form-author">
    <label for="author">Name <span class="required">*</span></label> 
    <input id="author" name="author" type="text" value="" maxlength="245" aria-required="true" required="required" />
  </p>
  <p class="comment-form-email">
    <label for="email">Email <span class="required">*</span></label> 
    <input id="email" name="email" type="email" value="" maxlength="100" aria-describedby="email-notes" aria-required="true" required="required" />
  </p>
  <p class="comment-form-url">
    <label for="url">Website</label> 
    <input id="url" name="url" type="url" value="" maxlength="200" />
  </p>
  <p class="form-submit">
    <input name="submit" type="submit" id="submit" class="submit" value="Post Comment" />
    <input type="hidden" name="comment_post_ID" value="1" id="comment_post_ID" /><br/>
    <input type="hidden" name="comment_parent" id="comment_parent" value="0" />
  </p>
  <div submit-error>
    <template type="amp-mustache">
      {{msg}}
    </template>
  </div>
</form>