text: const form = document.getElementById("form");
  const email = document.getElementById("email");
  
  form.addEventListener("submit", (e) => {
    e.preventDefault();
    const emailVal = email.value;
  
    if (!validateEmail(emailVal)) {
      form.classList.add("error");
    } else {
      form.classList.remove("error");
      document.body.innerHTML = `<div style="display:flex; align-items: center; justify-content: center;"><h1>Thank you!</h1></div>`;
    }
  });
  
  function validateEmail(email) {
    var re = /^(([^<>()\[\]\\.,;:\s@"]+(\.[^<>()\[\]\\.,;:\s@"]+)*)|(".+"))@((\[[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}\])|(([a-zA-Z\-0-9]+\.)+[a-zA-Z]{2,}))$/;
    return re.test(String(email).toLowerCase());
  }
  