CSS实现下拉菜单

1.知识点

定位postition

浮动float

展示display

 

2.实现效果

 

3.代码

<!DOCTYPE html>
<html>
<head>
<title>下拉菜单</title>
<meta charset="utf-8">
<style>
ul {
    list-style-type: none;
    margin: 0;
    padding: 0;
    overflow: hidden;
    background-color: #98bf21;
}

li {
    float: left;
}

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

li a:hover, .dropdown:hover .dropbtn {
    background-color: #7a991a;
}

.dropdown {
    display: inline-block;
}

.dropdown-content {
    display: none;
    position: absolute;
    background-color: #f9f9f9;
    min-width: 160px;
    box-shadow: 0px 8px 16px 0px rgba(122, 106, 106, 0.2);
}

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

.dropdown-content a:hover {background-color: #f1f1f1}

.dropdown:hover .dropdown-content {
    display: block;
}
</style>
</head>
<body>

<ul>
  <li><a class="active" href="#home">首页</a></li>
  <li><a href="#news">新闻</a></li>
  <div class="dropdown">
    <a href="#" class="dropbtn">体育</a>
    <div class="dropdown-content">
      <a href="#">NBA</a>
      <a href="#">足球</a>
      <a href="#">网球</a>
    </div>
  </div>
</ul>

</body>
</html>

 

 

 

posted @ 2019-04-09 22:18  一锤子技术员  阅读(6)  评论(0)  编辑  收藏  举报  来源