实现界面效果
1. HTML示例代码
<!DOCTYPE html>
<html lang="zh-CN">
<head><meta charset="UTF-8"><meta name="viewport" content="width=device-width, initial-scale=1.0"><link rel="stylesheet" type="text/css" href="css/styles.css" /><title>示例主页</title>
</head>
<body><header><h1>示例页面</h1>
</header><div class="navbar"><a href="#home">主页</a><div class="dropdown"><button class="dropbtn">文件选择 <i class="fa fa-caret-down"></i></button><div class="dropdown-content"><a href="#">打开文件</a><a href="#">保存文件</a><a href="#">另存为...</a></div></div> <div class="dropdown"><button class="dropbtn">功能函数 <i class="fa fa-caret-down"></i></button><div class="dropdown-content"><a href="#">计算</a><a href="#">排序</a><a href="#">过滤</a></div></div>
</div><div class="content"><h2>欢迎来到示例主页</h2><p>这是一个带有下拉菜单的导航栏示例。</p>
</div></body>
</html>2. CSS示例代码
body {font-family: Arial, sans-serif;margin: 0;padding: 0;
}
header {background-color: #4CAF50;color: white;text-align: center;padding: 1em 0;
}
.navbar {background-color: #333;overflow: hidden;display: flex;justify-content: center;
}
.navbar a, .dropdown .dropbtn {float: left;display: block;color: white;text-align: center;padding: 14px 20px;text-decoration: none;font-size: 16px; /* 设置字体大小 */
}
.dropdown {float: left;overflow: hidden;
}
.dropdown .dropbtn {border: none;outline: none;color: white;padding: 14px 16px;background-color: inherit;font-family: inherit;margin: 0;
}
.navbar a:hover, .dropdown:hover .dropbtn {background-color: #575757;
}
.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 {float: none;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;
}
.content {padding: 16px;text-align: center;
}
