iframe-1-ref.html
<html>
<head>
<style>
iframe {
overflow: hidden;
height: 200px;
width: 300px;
}
</style>
</head>
<body>
<iframe src="about:blank">
</iframe>
</body>
</html>
<html>
<head>
<style>
iframe {
overflow: hidden;
height: 200px;
width: 300px;
}
</style>
</head>
<body>
<iframe src="about:blank">
</iframe>
</body>
</html>