Edit in JSFiddle


              
            
          
            
              
                
<!DOCTYPE html>
<html>
  <head>
    <meta charset="utf-8">
  	<meta http-equiv="X-UA-Compatible" content="IE=edge">
  	<title> Free Software and Gnu Linux Algeria </title>
  	<meta name="viewport" content="width=device-width, initial-scale=1">
    <link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.7/css/bootstrap.min.css" >
    <link rel="stylesheet" href="assets/css/bootstrap-rtl.min.css" >
  </head>
  <body>
  <style>
	body{
		background-color:#fff;
		color:#444;
    line-height: 1.7em;
    padding: 50px 0;
	}
  </style>

  <div class="container">

    <div class="well well-sm">
        <h3 class="text-center"> <code> .well-sm </code>  مثال على صنف الـ  </h3>
    </div>
    <div class="well ">
        <h3 class="text-center"> <code> .well normal </code>  مثال على صنف الـ  </h3>
    </div>
    <div class="well well-lg">
        <h3 class="text-center"> <code> .well-lg </code>  مثال على صنف الـ  </h3>
    </div>

  </div>


<script src="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.7/js/bootstrap.min.js"></script>
<script src="https://ajax.googleapis.com/ajax/libs/jquery/3.3.1/jquery.min.js"></script>
  </body>
</html>