<!DOCTYPE html>
<html lang="en">
<head>
<style>
body {
	margin: 0;
}
div {
    width: 200px;
    height: 200px;
    background-color: green;
    border-radius: 100px;
}
</style>
</head>
<body>
<div></div>
<div></div>
</body>
</html>