function checkEmail() {
    let email = document.querySelector('#emailField').value;
    if (!email.includes('@')) alert('Нет символа @');
    else if(!email.includes('.')) alert('Нет символа .');
    else alert('Все отлично!')
};

function toggleMenu() {
  let menu = document.getElementById("menu");

  if (menu.style.display === "flex") {
    menu.style.display = "none";
  } else {
    menu.style.display = "flex";
  }
}