2-4.html

<!DOCTYPE html>
<html>
<head>
<title></title>
<meta charset="utf-8">
<script src="https://code.jquery.com/jquery-3.3.1.slim.min.js" ></script>
<link rel="stylesheet" href="https://stackpath.bootstrapcdn.com/bootstrap/3.4.1/css/bootstrap.min.css" integrity="sha384-HSMxcRTRxnN+Bdg0JdbxYKrThecOKuH5zCYotlSAcp1+c8xmyTe9GYg1l9a69psu" crossorigin="anonymous">
<script src="https://stackpath.bootstrapcdn.com/bootstrap/3.4.1/js/bootstrap.min.js" integrity="sha384-aJ21OjlMXNL5UyIl/XNwTMqvzeRMZH2w8c5cRVpzpU8Y5bApTppSuUkhZXN0VxHd" crossorigin="anonymous"></script>
</head>
<body>
     <label class="label label-primary">ページ方向</label>
      <label class="checkbox-inline"><input type="radio" name="radio" id="binding-rtl" value="radio1" checked="">右から左</label>
<label class="checkbox-inline"><input type="radio" name="radio" id="binding-ltr" value="radio2">左から右</label>
</body>
</html>