<!DOCTYPE html>
<html lang="zh-CN">
<head>
<meta charset="UTF-8">
<meta http-equiv="X-UA-Compatible" content="ie=edge">
<title>Document</title>
<script>
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1 / 像素 = 缩放的比例-->
var initScale = 1 / window.devicePixelRatio; document.write('<meta name="viewport" content="width=device-width,user-scalable=no，initial-scale='+ initScale +',minimum-scale='+ initScale +',maximum-scale='+ initScale +'">');
var initWidth = window.document.documentElement.clientWidth; document.getElementsByTagName('html')[0].style.fontSize = initWidth / 50 + 'px';
</script>
<style>
body{
margin: 0;
overflow: hidden;
}
.box{
width: 10rem;
height: 10rem;
margin: 0.33333rem;
background: pink;
float: left;
font-size: 30px;
}
</style>
</head>
<body>
<div class="box">box1</div>
<div class="box">box2</div>
<div class="box">box3</div>
<div class="box">box4</div>
<div class="box">box5</div>
<div class="box">box6</div>
</body>
</html>