0、效果:
![在这里插入图片描述](https://img-blog.csdnimg.cn/direct/0e811f773eb14827b2bab68444401049.png#pic_center)
1、html代码::
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>导航栏</title>
<link rel="stylesheet" href="./CSS/全局样式.css">
<link rel="stylesheet" href="./CSS/魅族导航栏.css">
</head>
<body