css制作导航菜单

水平导航菜单

使用 display: inline-block 或 flexbox 实现水平排列的导航菜单。

<nav class="horizontal-menu">
  <ul>
    <li><a href="#">首页</a></li>
    <li><a href="#">产品</a></li>
    <li><a href="#">服务</a></li>
    <li><a href="#">关于我们</a></li>
  </ul>
</nav>

.horizontal-menu ul {
  list-style-type: none;
  margin: 0;
  padding: 0;
  background-color: #333;
}

.horizontal-menu li {
  display: inline-block;
}

.horizontal-menu a {
  display: block;
  color: white;
  text-align: center;
  padding: 14px 16px;
  text-decoration: none;
}

.horizontal-menu a:hover {
  background-color: #111;
}

垂直导航菜单

通过设置 display: block 创建垂直排列的导航菜单。

<nav class="vertical-menu">
  <ul>
    <li><a href="#">首页</a></li>
    <li><a href="#">产品</a></li>
    <li><a href="#">服务</a></li>
    <li><a href="#">关于我们</a></li>
  </ul>
</nav>

.vertical-menu ul {
  list-style-type: none;
  margin: 0;
  padding: 0;
  width: 200px;
  background-color: #f1f1f1;
}

.vertical-menu li a {
  display: block;
  color: #000;
  padding: 8px 16px;
  text-decoration: none;
}

.vertical-menu li a:hover {
  background-color: #555;
  color: white;
}

下拉菜单导航

结合 :hover 伪类和绝对定位实现下拉菜单效果。

<nav class="dropdown-menu">
  <ul>
    <li><a href="#">首页</a></li>
    <li class="dropdown">
      <a href="#">产品</a>
      <div class="dropdown-content">
        <a href="#">产品1</a>
        <a href="#">产品2</a>
        <a href="#">产品3</a>
      </div>
    </li>
    <li><a href="#">服务</a></li>
  </ul>
</nav>

.dropdown-menu ul {
  list-style-type: none;
  margin: 0;
  padding: 0;
  overflow: hidden;
  background-color: #333;
}

.dropdown-menu li {
  float: left;
}

.dropdown-menu li a {
  display: block;
  color: white;
  text-align: center;
  padding: 14px 16px;
  text-decoration: none;
}

.dropdown-menu li a:hover {
  background-color: #111;
}

.dropdown-content {
  display: none;
  position: absolute;
  background-color: #f9f9f9;
  min-width: 160px;
  box-shadow: 0px 8px 16px 0px rgba(0,0,0,0.2);
  z-index: 1;
}

.dropdown-content a {
  color: black;
  padding: 12px 16px;
  text-decoration: none;
  display: block;
  text-align: left;
}

.dropdown-content a:hover {
  background-color: #ddd;
}

.dropdown:hover .dropdown-content {
  display: block;
}

响应式导航菜单

使用媒体查询和 flexbox 创建适应不同屏幕尺寸的导航菜单。

<nav class="responsive-menu">
  <div class="menu-icon">☰</div>
  <ul>
    <li><a href="#">首页</a></li>
    <li><a href="#">产品</a></li>
    <li><a href="#">服务</a></li>
    <li><a href="#">关于我们</a></li>
  </ul>
</nav>

.responsive-menu {
  background-color: #333;
  display: flex;
  flex-direction: column;
}

.responsive-menu ul {
  list-style-type: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
}

.responsive-menu li a {
  display: block;
  color: white;
  text-align: center;
  padding: 14px 16px;
  text-decoration: none;
}

.responsive-menu li a:hover {
  background-color: #111;
}

.menu-icon {
  display: none;
  color: white;
  font-size: 24px;
  padding: 14px 16px;
  cursor: pointer;
}

@media screen and (min-width: 768px) {
  .responsive-menu ul {
    flex-direction: row;
  }

  .menu-icon {
    display: none;
  }
}

@media screen and (max-width: 767px) {
  .responsive-menu ul {
    display: none;
  }

  .menu-icon {
    display: block;
  }

  .responsive-menu.active ul {
    display: flex;
  }
}

document.querySelector('.menu-icon').addEventListener('click', function() {
  document.querySelector('.responsive-menu').classList.toggle('active');
});