菜鸟 求问 哪里出问题了？ 为什么三个不能放在一行
<script type="text/javascript" src="j_query.js"></script>
<title>无标题文档</title>
<link href="bootstrap-3.2.0-dist/css/bootstrap.css" rel="stylesheet" type="text/css">
<link href="bootstrap-3.2.0-dist/css/bootstrap.min.css" rel="stylesheet" type="text/css">
</head>
<body>
<div class="container">
<h1 class="page-header">buju </h1>
<p>content</p>
<div class="row">
<div class="span4" >
<h2 class="page-header">1</h2>
<p>211111111111111111111111111111</p>
</div>
<div class="span4" >
<h2 class="page-header">2</h2>
<p>21111111111111111111111111111111111111111</p>
</div>
<div class="span4" >
<h2 class="page-header">3</h2>
<p>311111111111111111111111111111111111111</p>
</div>
</div>
</div>
<script src="bootstrap-3.2.0-dist/js/bootstrap.js"></script>
<script src="bootstrap-3.2.0-dist/js/bootstrap.min.js"></script>
</body>
<title>无标题文档</title>
<link href="bootstrap-3.2.0-dist/css/bootstrap.css" rel="stylesheet" type="text/css">
<link href="bootstrap-3.2.0-dist/css/bootstrap.min.css" rel="stylesheet" type="text/css">
</head>
<body>
<div class="container">
<h1 class="page-header">buju </h1>
<p>content</p>
<div class="row">
<div class="span4" >
<h2 class="page-header">1</h2>
<p>211111111111111111111111111111</p>
</div>
<div class="span4" >
<h2 class="page-header">2</h2>
<p>21111111111111111111111111111111111111111</p>
</div>
<div class="span4" >
<h2 class="page-header">3</h2>
<p>311111111111111111111111111111111111111</p>
</div>
</div>
</div>
<script src="bootstrap-3.2.0-dist/js/bootstrap.js"></script>
<script src="bootstrap-3.2.0-dist/js/bootstrap.min.js"></script>
</body>
带不带min的css文件是一样的，不用引用两次。