【Css】简单二级菜单 

<!doctype html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport"
          content="width=device-width, user-scalable=no, initial-scale=1.0, maximum-scale=1.0, minimum-scale=1.0">
    <meta http-equiv="X-UA-Compatible" content="ie=edge">
    <title>Document</title>
    <style>
        * {
            margin: 0;
            padding: 0;
        }

        .box {
            width: 300px;
            margin: 0 auto;

        }

        ul {
            list-style: none;
        }

        .box .item {
            float: left;
            width: 148px;
            border: 1px solid blue;
            background: blue;
            color: #f0f0f0;
            line-height: 40px;
            text-align: center;
        }

        .item:hover {
            background: lightblue;
        }
        /* > 子代选择器*/
        .item>ul{
            display: none;
            background: #f0f0f0;
            color: black;
        }
        .item:hover ul{
            display: block;
        }
        .item li:hover{
            color: blue;
        }
    </style>
</head>
<body>
<ul class="box">
    <li class="item">视频教程
        <ul>
            <li>全部视频教程</li>
            <li>Java教程</li>
            <li>Python教程</li>
            <li>HTML教程</li>
        </ul>
    </li>
    <li class="item">认证考试
        <ul>
            <li>全部认证</li>
            <li>Java认证</li>
            <li>Python认证</li>
            <li>HTML认证</li>
        </ul>
    </li>
</ul>
</body>
</html>

效果

posted @ 2022-04-11 17:35  木子欢儿  阅读(105)  评论(0)  编辑  收藏  举报