如何在CSS中实现响应式导航菜单_toggle与媒体查询实践

<nav class="navbar">
  <div class="nav-toggle" id="mobile-toggle">
    <span></span>
    <span></span>
    <span></span>
  </div>
  <ul class="nav-menu">
    <li><a href="#home">首页</a></li>
    <li><a href="#about">关于</a></li>
    <li><a href="#services">服务</a></li>
    <li><a href="#contact">联系</a></li>
  </ul>
</nav>

.navbar {
  background: #333;
  padding: 1rem;
}

.nav-menu {
  display: flex;
  list-style: none;
  margin: 0;
  padding: 0;
}

.nav-menu li a {
  color: white;
  text-decoration: none;
  padding: 0.5rem 1rem;
}

.nav-toggle {
  display: none;
}

@media (max-width: 768px) {
  .nav-toggle {
    display: block;
    cursor: pointer;
  }

  .nav-toggle span {
    width: 25px;
    height: 3px;
    background: white;
    margin: 5px auto;
    transition: 0.3s;
  }

  .nav-menu {
    display: none;
    flex-direction: column;
    background: #444;
  }

  .nav-menu.active {
    display: flex;
  }
}

document.getElementById('mobile-toggle').addEventListener('click', function() {
  document.querySelector('.nav-menu').classList.toggle('active');
});