我使用 twitter bootstrap 开发响应式 css 你能告诉我如何开发带有水平方向链接而不是垂直方向的下拉菜单
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<div class="navbar navbar-inverse navbar-fixed-top">
<div class="navbar-inner">
<div class="container">
<a class="btn btn-navbar" data-toggle="collapse" data-target=".nav-collapse">
<span class="icon-bar"></span>
<span class="icon-bar"></span>
<span class="icon-bar"></span>
</a>
<a class="brand" href="#">
<img alt="change" class="defieLogo" src="http://www.defie.co/designerImages/defie_logo_only.png">
</a>
<div class="nav-collapse in collapse" style="height: auto;">
<ul class="nav">
<li class="active"><a href="/docs/examples/product.html">Product</a></li>
<li><a href="/docs/examples/solutions.html">Solutions</a></li>
<li><a href="/docs/examples/services.html">Services</a></li>
<li><a href="/docs/examples/partners.html">Partners</a></li>
<li><a href="/docs/examples/partners.html">Contact</a></li>
</ul>
<form class="navbar-form pull-right">
<input class="span2" type="text" placeholder="Email">
<input class="span2" type="password" placeholder="Password">
<button type="submit" class="btn">Sign in</button>
</form>
</div><!--/.nav-collapse -->
</div>
</div>
</div>