<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta http-equiv="X-UA-Compatible" content="IE=edge">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<link rel="stylesheet" href="style.css">
<title> Customize Radio Input</title>
</head>
<body>
<form action="">
<div>
<input id="mac" type="radio" name="os" />
<label for="mac">Mac</label>
</div>
<div>
<input id="lin" type="radio" name="os" />
<label for="lin">Linux</label>
</div>
<div>
<input id="win" type="radio" name="os" />
<label for="win">Windows</label>
</div>
</form>
</body>
</html>