<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<meta http-equiv="X-UA-Compatible" content="ie=edge">
<title>固定定位小技巧-固定到版心右侧</title>
<style>
.w {
width: 800px;
height: 1400px;
background-color: pink;
margin: 0 auto;
}
.fixed {
position: fixed;
/* 1. 走浏览器宽度的一半 */
left: 50%;
/* 2. 利用margin 走版心盒子宽度的一半距离 */
margin-left: 405px;
width: 50px;
height: 150px;
background-color: skyblue;
}
</style>
</head>
<body>
<div class="fixed"></div>
<div class="w">版心盒子 800像素</div>
</body>
</html>
