我有这个标记:
<div class='navbar'>
<div class='navbar-inner'>
<div class='container'>
<a class='btn btn-navbar' data-target='.nav-collapse' data-toggle='collapse'>
<span class='icon-bar'></span>
<span class='icon-bar'></span>
<span class='icon-bar'></span>
</a>
<div class='nav-collapse'>
<ul class='nav'>
<li class='active'>
<a href='#'>Home</a>
<a href='#'>Option 2</a>
<a href='#'>Option 3</a>
</li>
</ul>
</div>
</div>
</div>
</div>
当屏幕已满时它呈现正常,但是当我折叠屏幕时,它不显示展开以显示选项的按钮。有什么我做的不对吗?知道为什么屏幕折叠后按钮不显示吗?
谢谢!