列折叠在768px，菜单折叠在767px？

Question

我的网站使用twitter-bootstrap-3并有2列布局（col-sm-9和col-sm-3）。

col-sm-9包含我的博客和col-sm-3包含侧边栏导航栏。

由于一些奇怪的原因，导航栏崩溃在767px，而博客容器崩溃在768px。

这意味着当我的视口恰好在768px时，菜单看起来很糟糕。

这是一种错误，有人可以帮我解决这个问题吗？

<div class="col-sm-9 tutorial-panel"> 
    <section> 
    This is my blog content 
    </section> 

    <nav class="col-sm-3 navbar-default"> 
    <div class="navbar-header"> 
     <button type="button" class="navbar-toggle" 
      data-toggle="collapse" data-target="#example-navbar-collapse"> 
     <span class="sr-only">Toggle navigation</span> 
     <span class="icon-bar"></span> 
     <span class="icon-bar"></span> 
     <span class="icon-bar"></span> 
     </button> 
    </div> 

    <div class="collapse navbar-collapse" id="example-navbar-collapse"> 
     <ul class="clearfix"> 
     <li>item 1</li> 
     <li>item 2</li> 
     <li>item 3</li> 
     </ul> 
    </div> 
    </nav> 

Answer 1

看看Bootstrap Docs，你不能有一个navbar里面.col-*-*，而且它可能会导致问题。

<link href="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.6/css/bootstrap.min.css" rel="stylesheet"/> 
 
<script src="https://ajax.googleapis.com/ajax/libs/jquery/1.11.1/jquery.min.js"></script> 
 
<script src="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.6/js/bootstrap.min.js"></script> 
 
<nav class="navbar navbar-default"> 
 
    <div class="container-fluid"> 
 
    <!-- Brand and toggle get grouped for better mobile display --> 
 
    <div class="navbar-header"> 
 
     <button type="button" class="navbar-toggle collapsed" data-toggle="collapse" data-target="#bs-example-navbar-collapse-1" aria-expanded="false"> 
 
     <span class="sr-only">Toggle navigation</span> 
 
     <span class="icon-bar"></span> 
 
     <span class="icon-bar"></span> 
 
     <span class="icon-bar"></span> 
 
     </button> 
 
     <a class="navbar-brand" href="#">Brand</a> 
 
    </div> 
 

 
    <!-- Collect the nav links, forms, and other content for toggling --> 
 
    <div class="collapse navbar-collapse" id="bs-example-navbar-collapse-1"> 
 
     <ul class="nav navbar-nav"> 
 
     <li class="active"><a href="#">Link <span class="sr-only">(current)</span></a></li> 
 
     <li><a href="#">Link</a></li> 
 
     <li class="dropdown"> 
 
      <a href="#" class="dropdown-toggle" data-toggle="dropdown" role="button" aria-haspopup="true" aria-expanded="false">Dropdown <span class="caret"></span></a> 
 
      <ul class="dropdown-menu"> 
 
      <li><a href="#">Action</a></li> 
 
      <li><a href="#">Another action</a></li> 
 
      <li><a href="#">Something else here</a></li> 
 
      <li role="separator" class="divider"></li> 
 
      <li><a href="#">Separated link</a></li> 
 
      <li role="separator" class="divider"></li> 
 
      <li><a href="#">One more separated link</a></li> 
 
      </ul> 
 
     </li> 
 
     </ul> 
 
     <form class="navbar-form navbar-left" role="search"> 
 
     <div class="form-group"> 
 
      <input type="text" class="form-control" placeholder="Search"> 
 
     </div> 
 
     <button type="submit" class="btn btn-default">Submit</button> 
 
     </form> 
 
     <ul class="nav navbar-nav navbar-right"> 
 
     <li><a href="#">Link</a></li> 
 
     <li class="dropdown"> 
 
      <a href="#" class="dropdown-toggle" data-toggle="dropdown" role="button" aria-haspopup="true" aria-expanded="false">Dropdown <span class="caret"></span></a> 
 
      <ul class="dropdown-menu"> 
 
      <li><a href="#">Action</a></li> 
 
      <li><a href="#">Another action</a></li> 
 
      <li><a href="#">Something else here</a></li> 
 
      <li role="separator" class="divider"></li> 
 
      <li><a href="#">Separated link</a></li> 
 
      </ul> 
 
     </li> 
 
     </ul> 
 
    </div><!-- /.navbar-collapse --> 
 
    </div><!-- /.container-fluid --> 
 
</nav>