css 下拉菜单实例 - 自学教程(runoops.com)

<!DOCTYPE html>
<html>

<head>
    <meta charset="utf-8">
    <title>css 下拉菜单 实例 - 自学教程(runoops.com)</title>
    <style>
        .dropbtn {
            background-color: #4CAF50;
            color: white;
            padding: 16px;
            font-size: 16px;
            border: none;
            cursor: pointer;
        }

.dropdown {
            position: relative;
            display: inline-block;
        }

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

.dropdown:hover .dropbtn {
            background-color: #3e8e41;
        }
    </style>
</head>

<body>

<h2>下拉菜单</h2>
    <p>鼠标移动到按钮上打开下拉菜单。</p>

<div class="dropdown">
        <button class="dropbtn">下拉菜单</button>
        <div class="dropdown-content">
            <a href="//www.runoops.com">runoops自学教程 1</a>
            <a href="//www.runoops.com">runoops自学教程 1</a>
            <a href="//www.runoops.com">runoops自学教程 1</a>
        </div>
    </div>

</body>

</html>