<!DOCTYPE html>
<html>
<head lang="en">
<meta charset="UTF-8">
<meta content="width=device-width, initial-scale=1.0, maximum-scale=1.0, user-scalable=0" name="viewport" />
<title>测试demo</title>
<style>
*{margin: 0; padding: 0;}
</style>
</head>
<body>
<script>
</script>
</body>
</html>