[34--CSS] fixed 固定定位
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>Title</title>
<style>
div{
width: 100px;
height: 100px;
background-color: pink;
position: fixed;
bottom: 100px;
right: 50px;
}
</style>
</head>
<body>
<div>我在这里</div>
</body>
</html>
