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我有以下簡單的HTML頁面。它應該水平顯示Col1到Col4,但是Col4在其他的下面。爲什麼?我該如何解決它?Twitter Bootstrap:網格系統浮動
我使用的是引導2.2.2
<html>
<head>
<!-- Bootstrap -->
<link media="screen" rel="stylesheet" href="http://localhost:9000/assets/stylesheets/bootstrap.min.css">
</head>
<body>
<div class="container">
<div class="row">
<div class="span6 row">
<div class="span1">Col1</div>
<div class="span1">Col2</div>
<div class="span1">Col3</div>
<div class="span3">Col4</div>
</div>
<div class="span6 row">
</div>
</div>
</div>
<script src="http://localhost:9000/assets/javascripts/bootstrap.min.js"></script>
</body>
</html>