<!doctype html>
<html>
<head>
<meta charset="utf-8">
<meta http-equiv="X-UA-Compatible" content="IE=edge">
<title>一書一課App</title>
<meta name="description" content="一書一課">
<meta name="apple-mobile-web-app-capable" content="yes">
<meta name="apple-mobile-web-app-status-bar-style" content="black">
<meta name="apple-mobile-web-app-title" content="Your title">
<meta name="format-detection" content="telephone=no">
<meta http-equiv="Pragma" content="no-cache">
<meta http-equiv="Cache-Control" content="no-cache">
<meta http-equiv="Expires" content="0">
<style>
.scale-border{
height:100px;
position:relative;
width: 200px;
}
.border{
-webkit-transform:scale(0.5);
transform:scale(0.5);
position:absolute;
border:1px solid pink;
top:-50%;
right:-50%;
bottom:-50%;
left:-50%;
border-radius: 10px;
background-color:#eee;
}
.content{
position:relative;
z-index:2;
}
</style>
</head>
<body>
<div class="scale-border ">
<div class="content">邊框寬度0.5px</div>
<div class="border"></div>
</div>
</body>
</html>
去掉： transform:scale(0.5) 後，相當於整體變成原來的2倍。
