<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<title>Insert title here</title>
<script>
let width = screen.width;
let height = screen.height;
var reWidth = 0;
var reHeight = 0;
let sub = open("", "", "width = " + width + " height = " + height) // 팝업 생성
let timerId = setInterval(function() {
width = width - 40;
height = height - 40;
sub.moveTo(reWidth, reHeight);
sub.resizeTo(width, height)
reWidth += 20;
reHeight += 20;
}, 1000)
setTimeout(() => {clearInterval(timerId)}, 10000);
</script>
</head>
<body>
</body>
</html>
