<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title><?=$siteName?></title>
<style>
#page {
width: 350px;
height: 100vh;
margin: 0 auto;
display: block;
position: absolute;
left: 50%;
-webkit-transform: translate(-50%,0);
-moz-transform: translate(-50%,0);
transform: translate(-50%,0);
}
</style>
</head>
<body>
<iframe id="page" src="<?=$url?>" frameborder="0"></iframe>
</body>
</html>