make a better send button

helios/templates/voters_email.html

@@ -47,7 +47,7 @@ You may tweak the subject and add a custom message using the form below.
      {{email_form.as_table}}
      </table>
   <div>
-  <label for="">&nbsp;</label><input type="submit" value="Send" id="send_button" />
+  <label for="">&nbsp;</label><input type="submit" value="Send" id="send_button" class="button" />
   </div>
   </form>