使用css实现吸顶效果很简单，position:sticky ,再设置相对应的top值就好了
但要注意，要做浏览器兼容 position: -webkit-sticky;
下面是代码的实现
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>Document</title>
<style>
*{
margin: 0;
padding: 0;
list-style: none;
}
.wrap{
width: 100%;
height: 1000px;
}
.title{
width: 100%;
height: 300px;
text-align: center;
background: chocolate;
}
.nav{
/* 兼容chorme */
position: -webkit-sticky;
position: sticky;
top: 0px;
width: 100%;
height: 40px;
text-align: center;
background: chartreuse;
color: #fff;
}
.item-list{
width: 100%;
height: 20px;
display: inline-block;
background: cornflowerblue;
color: #fff;
}
</style>
</head>
<body>
<div class="wrap">
<div class="title">css吸顶效果实现</div>
<div class="nav">导航吸顶导航吸顶导航吸顶导航吸顶</div>
<ul class="item">
<li class="item-list">海上生明月天涯若比邻</li>
<li class="item-list">海上生明月天涯若比邻</li>
<li class="item-list">海上生明月天涯若比邻</li>
<li class="item-list">海上生明月天涯若比邻</li>
<li class="item-list">海上生明月天涯若比邻</li>
<li class="item-list">海上生明月天涯若比邻</li>
<li class="item-list">海上生明月天涯若比邻</li>
<li class="item-list">海上生明月天涯若比邻</li>
<li class="item-list">海上生明月天涯若比邻</li>
</ul>
</div>
</body>
</html>
实现效果
image.png
向下滚动
image.png
