gistfile1.html

<form>
 <!-- Added button to top -->
 <input type="submit" name="continue" value="Continue" />
 <div>
  <label for="firstName">First name</label>
  <input type="text" name="firstName" id="firstName" />
 </div>
 <div>
  <label for="lastName">Last name</label>
  <input type="text" name="lastName" id="lastName" />
 </div>
 <h2>Post code finder</h2>
 <div>
  <label for="postcode">Postcode</label>
  <input type="text" name="postcode" id="postcode" />
  <input type="submit" name="checkPostcode" value="Check postcode"/>
 </div>
 <div>
  <label for="deliveryNotes">Delivery notes</label>
  <textarea name="deliveryNotes" id="deliveryNotes"></textarea>
 </div>
 <input type="submit" name="continue" value="Continue" />
</form>