Bootstrap历练实例：响应式导航
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<html >
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8"/>
<meta http-equiv="X-UA-Compatible"content="IE=edge" />
<meta name="viewport"content="width=device-width,initial-scale=1.0" />
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<title>Bootstrap历练实例：响应式导航</title>
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</head>
<body>
<nav class="navbar navbar-inverse"role="navigation">
<div class="container">
<div class="navbar-header">
<button type="button" class="navbar-toggle"data-toggle="collapse"data-target="#navbar">
<span class="sr-only">切换导航</span>
<span class="icon-bar"></span>
<span class="icon-bar"></span>
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</button>
<a href="#"class="navbar-brand">Bootstrap</a>
</div>
<div class="navbar-collapse collapse"></script>
</body>
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