题解 | #固定定位#
固定定位
http://www.nowcoder.com/practice/241cacea068f446cb91c96b75479feff
<html>
<head>
<meta charset=utf-8>
<style type="text/css">
.box {
width: 100px;
height: 100px;
/*补全代码*/
position: fixed;
left: 0px;
top: 0px;
}
</style>
</head>
<body>
<div class='box'></div>
</body>
</html>