代码：
<!doctypoe html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>Document</title>
<meta name="viewport" content="width=device-width, scale=1.0">
<meta http-equiv="X-UA-Compatible" content="IE=edge">
<link rel="stylesheet" href="lib/bootstrap/css/bootstrap.min.css">
<link rel="stylesheet" href="css/style.css">
</head>
<body>
<div class="container">
<div class="row">
<div class="col-md-9">
<h1 class="page-header">title</h1>
<p>retcvgbjhknlm234567890-kjhgfdsasdfghjklezsxfdgezrxtcyvgbhnjk</p>
<div class="row">
<div class="col-md-4">
<h1 class="page-header">title</h1>
<p>retcvgbjhknlm234567890-kjhgfdsasdfghjklezsxfdgezrxtcyvgbhnjk</p>
</div>
<div class="col-md-4">
<h1 class="page-header">title</h1>
<p>retcvgbjhknlm234567890-kjhgfdsasdfghjklezsxfdgezrxtcyvgbhnjk</p>
</div>
<div class="col-md-4">
<h1 class="page-header">title</h1>
<p>retcvgbjhknlm234567890-kjhgfdsasdfghjklezsxfdgezrxtcyvgbhnjk</p>
</div>
</div>
</div>
<div class="col-md-3">
<h1 class="page-header">sidebar</h1>
<p>retcvgbjhknlm234567890-kjhgfdsasdfghjklezsxfdgezrxtcyvgbhnjk</p>
</div>
</div>
</div>
<script src="lib/jquery/jquery.min.js"></script>
<script src="lib/bootstrap/js/bootstrap.min.js"></script>
</body>
</html>
效果：
图片.png
