https://www.jianshu.com/p/3cc866a57e1a
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<title></title>
<style type="text/css">
* {
padding:0;
margin: 0;
}
html, body {
width: 100%;
}
#header {
background-color: #333;
padding: 10px 10%;
}
#header a {
text-decoration: none;
color: white;
}
#header a:hover {
color: #DDD;
}
/* 导航栏按钮 */
.btn {
display: none;
float:right;
margin-top: 5px;
border: 0;
border-radius: 5px;
width: 40px;
height: 40px;
}
/* 文字Logo */
#header a.logo {
float:left;
font-weight: bold;
font-size: 39px;
line-height: 50px;
}
#header div.nav {
height: 50px;
}
#header ul.nav-bar {
list-style: none;
float: right;
line-height: 50px;
}
#header ul.nav-bar li {
float:left;
padding: 0 10px;
}
@media screen and (max-width: 768px){
#header {
padding: 10px 5%;
height: 50px;
overflow: hidden;
}
#header a.logo {
line-height: 55px;
font-size: 30px;
}
.btn {
display: block;
}
#header ul.nav-bar {
margin-top: 15px;
border-top: solid 1px #111;
width:100%;
}
#header ul.nav-bar li {
float: none;
padding: 0 10px;
}
}
#container {
width: 100%;
height: 300px;
background:#FFBBBB;
}
</style>
</head>
<body>
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8" />
<meta name="viewport" content="width=device-width,initial-scale=1,maximum-scale=1,minimum-scale=1,user-scalable=no" />
<title></title>
<link rel="stylesheet" type="text/css" href="./style.css">
<script src="https://apps.bdimg.com/libs/jquery/2.1.4/jquery.min.js"></script>
</head>
<body>
<div id="header">
<div class="nav">
<a href="#" class="logo">自适应导航栏</a>
<div id="nav-btn" class="btn">
<img src="img/pic.png" style="margin: 5px;width: 30px;height:30px;" />
</div>
<ul class="nav-bar">
<li><a href="#">首页</a></li>
<li><a href="#">归档</a></li>
<li><a href="#">标签</a></li>
<li><a href="#">关于</a></li>
</ul>
</div>
</div>
<div id="container">
<h3>正文内容Content</h3>
</div>
</body>
<script type="text/javascript">
// 开关状态
var open = false;
$('#nav-btn').click(function (){
// 按钮状态
$(this).css("background-color", open ? '#333' : '#222');
var navBar = $('.nav-bar');
// 设置header的高度，将导航列表显示出来
var height = navBar.offset().top + navBar.height();
$('#header').animate({
height: open ? 50 : height
});
// 修改开关状态
open = !open;
});
</script>
</html>
</body>
</html>
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