有没有办法垂直堆叠`Tab`？

<ul class="tab-nav">
  <li class="active">Tab 1</li>
  <li>Tab 2</li>
  <li>Tab 3</li>
</ul>

<div class="tab-content">
  <div class="tab-pane active">
    Content of Tab 1
  </div>
  <div class="tab-pane">
    Content of Tab 2
  </div>
  <div class="tab-pane">
    Content of Tab 3
  </div>
</div>

.tab-nav {
  width: 200px;
  background-color: #f1f1f1;
  list-style-type: none;
  padding: 0;
}

.tab-nav li {
  padding: 10px;
  cursor: pointer;
}

.tab-nav li.active {
  background-color: #ccc;
}

.tab-content {
  width: 200px;
  height: 300px;
  background-color: #f1f1f1;
  overflow: auto;
}

.tab-pane {
  display: none;
  padding: 10px;
}

.tab-pane.active {
  display: block;
}

var tabNav = document.querySelectorAll('.tab-nav li');
var tabContent = document.querySelectorAll('.tab-pane');

for (var i = 0; i < tabNav.length; i++) {
  tabNav[i].addEventListener('click', function() {
    var tabId = this.getAttribute('data-tab');

    for (var j = 0; j < tabContent.length; j++) {
      tabContent[j].classList.remove('active');
    }

    for (var k = 0; k < tabNav.length; k++) {
      tabNav[k].classList.remove('active');
    }

    document.querySelector('#' + tabId).classList.add('active');
    this.classList.add('active');
  });
}