Change submit section into div as no heading is used

Author: habohlin

Form-Controls/index.html

@@ -83,10 +83,10 @@ <h1>Product Pick</h1>
             </select>
           </fieldset>
 
-          <section id="submit-section">
+          <div id="submit">
             <label for="submit-btn">Submit button</label>
             <button type="submit">Submit</button>
-          </section>
+          </div>
 
       </form>
     </main>