title: JavaScript classList.toggle doesn't work in IE 11/Edge
body: <p>I have a problem with <code>classList</code>. </p>
  
  <p>I tried to Open/Close with one button, like a <code>Element.classList.toggle("name_css");</code> </p>
  
  <p>I have problems with that in IE 11/Edge.<br>
  Other browsers are OK.</p>
  
  <pre><code>var buttonOpen = document.querySelector(".travel__btn");
  var ModalWindow = document.querySelector("form");
  ModalWindow.classList.add("info__modal-hide");
  buttonOpen.addEventListener("click", function(evt) {
    evt.preventDefault();
    ModalWindow.classList.toggle("info__modal");
    Login.focus();
    if (storage) {
      In.value = storage;
      Out.focus();
    } else {
      In.focus();
    }
  });
  
  .travel__info {
    padding: 55 px;
    height: 285 px;
    width: 458 px;
    background - color: white;
    display: block;
  }
  .info__modal - hide {
      display: none;
    }
    .info__modal {
      display: block;
      animation: bounce 0.6 s;
    }
  </code></pre>