隨着窗口的大小來改變字體大小。
<!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>
</head>
<style type="text/css">
*{
margin: 0;
padding: 0;
}
label{
font-size:1rem;
}
</style>
<body>
<label for="name">姓名:</label>
<input type="text" id="name">
</body>
<script>
(function(doc, win) {
var ag_size = doc.documentElement,
resizeEvt = 'orientationchange' in window ? 'orientationchange' : 'resize',
recalc = function() {
var clientWidth = ag_size.clientWidth;
if (!clientWidth) return;
ag_size.style.fontSize = 20 * (clientWidth / 320) + 'px';
};
if (!doc.addEventListener) return;
win.addEventListener(resizeEvt, recalc, false);
doc.addEventListener('DOMContentLoaded', recalc, false);
})(document, window);
</script>
</html>