<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<style>
#iframeContainer {
overflow: hidden;
position: relative;
width: 100%;
height: 800px;
}
#iframeContainer iframe {
position: absolute;
top: -30%;
bottom: -300px;
width: 100%;
height: 100%;
border: none;
}
</style>
</head>
<body>
<div id="iframeContainer">
<iframe src="örnek.com" frameborder="0" allowfullscreen></iframe>
</div>
</body>
</html>