如何在responsive中使顶部栏元素可单击？

<div class="top-bar">
  <a href="#" class="logo">Logo</a>
  <nav>
    <ul>
      <li><a href="#">Home</a></li>
      <li><a href="#">About</a></li>
      <li><a href="#">Services</a></li>
      <li><a href="#">Contact</a></li>
    </ul>
  </nav>
</div>

.top-bar {
  background-color: #333;
  color: #fff;
  padding: 10px;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.logo {
  color: #fff;
  text-decoration: none;
  font-size: 20px;
}

nav ul {
  list-style: none;
  display: flex;
}

nav ul li {
  margin-right: 10px;
}

nav ul li a {
  color: #fff;
  text-decoration: none;
}

var topBar = document.querySelector('.top-bar');

topBar.addEventListener('click', function() {
  // 处理顶部栏元素的点击事件
  // 可以在这里执行导航、显示下拉菜单等操作
});