 form submit withtout any jquery
  function handleFormSubmit(event) {
    event.preventDefault();     // we are submitting via xhr below
    var data = getFormData();   // get the values submitted in the form
    var phone = document.getElementById("phone");
    // https://stackoverflow.com/a/6449750/1148249
    if (phone && ( isNaN(phone.value) || phone.value.length < 7) ) {
      console.log(phone.value);
      document.getElementById('phone').style.border = '1px solid #ED5434';
      document.getElementB