前言
开发地图时，需要将渲染地图的div撑满整个屏幕。操作如下：
代码
<!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>Document</title>
<style>
*{
margin: 0;
padding: 0;
}
div{
height: 100%;
width: 100%;
position: absolute;
background: red;
}
</style>
</head>
<body>
<div></div>
</body>
</html>